10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (2024)

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (1)
Are you fed up with the never-ending algal growth and debris polluting your aquarium?

Well, so was I, until I included some freshwater fish that helped me clean the bottom and decor pieces in my tank.

Even though these fish did solve my problem, it would have been better to prevent the fouling and consequent algal blooms from happening in the first place.

I’ll explain how you can do this in detail, but let’s first take a look at the best cleaner fish that will help sanitize your aquarium.

10 Freshwater Fish That Will Clean Your Tank

There are chemicals you can use to remove the algae from your tank, but they’re not the most elegant solution. Sure, they will have an immediate effect, but you’ll have to deal with another algae bloom in the future because the underlying issue will be unresolved.

Cleaner fish, on the other hand, will not only put an end to your short-term turmoil but will also prevent algae and debris buildups in the future.

Here are the best freshwater fish for keeping an aquarium clean:

1. Clown Pleco – Panaqolus maccus

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (2)

by Chubbs

Maximum size:3.5 inches (7.9 cm)
Tank sizeThe fish is not very active, so a 10-gallon tank is appropriate
Water Temperature:77 to 85 °F or 25 to 29.4 °C

The Clown Pleco fish, also known as Panaqolus maccus, is a peaceful bottom dweller that enjoys snacking on algae.

The average size of these fish is about 3.5 inches, but they can grow up to 4 inches on rare occasions.

Even though these fish don’t need a ton of space, it’s better to keep them in a larger aquarium if you can afford it.

Apart from the algae they eat, these plecos have some peculiar dietary preferences.

Unlike other fish species, Clown plecos seem to perceive driftwood as a form of food, rather than decoration. If you can find some driftwood for their tank, they will waste no time, and try to munch on it whenever they find an opportunity!

In fact, it’s actually recommended to have several types of wood in a tank with a Clown Pleco to support the fish’s diet.

Another great thing about these fish is their nonchalant nature.

They will rarely if ever acknowledge the existence of other fish in the tank.

Suggested Read: Best Fish Ideas for Your 10-Gallon Freshwater Aquarium

2. Panda Garra – Garra flavatra

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (3)

by John q

Maximum size:4 inches but they usually remain around 3.2 (approximately 8 to 10 cm)
Tank size20 gallons and above
Water Temperature:70 – 77 °F (21 – 25 °C)

If you’re looking for an active and friendly fish to keep your tank clean, then look no further than the Garra flavata. These feisty little fish are peaceful most of the time, but their intense personalities can sometimes get them into scuffles.

Panda Garras are great at clearing up algal growth.

Depending on its severity, you’ll need between one and five of these guys to get the job done.

These fish need a tank size of about 20 gallons so they can freely express their lively nature, without bothering any of their tank mates.

They are not large fish and tend to only grow to about 4 inches at the most. Their unique personalities and sanitary habits make them a valuable member of any community aquarium.

3. True Siamese algae eater – Crossocheilus siamensis

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (4)

by sanj

Maximum size:6 Inches (15 centimeters)
Tank size20 gallon long and above
Water Temperature:75 to 76 °F (23.9 to 24.4 °C)

Siamese algae eaters (Crossocheilus siamensis) are a great addition for anyone who’s looking to minimize the algae growth in their aquarium.

With an adult size of 6 inches, these aptly named fish are the largest fish mentioned thus far.

Their size and insatiable appetite for algae and moss make them ideal for bigger tanks that are in desperate need of a cleanup.

Siamese algae eaters don’t have a swim bladder that can keep them floating so they spend most of their time hovering over the bottom.

As a result, they require softer substrates that won’t scratch their skin. For this purpose, I recommend using substrates such as sand or aqua soils.

Although they get along well with other types of fish, there is always the possibility of fights if the space is not adequate.

4. Rosy & Cherry Barbs – Pethia conchonius & Puntius titteya

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (5)

Rosy Barb by Bettatail and Cherry Barb by nanoscapeig

Maximum size:Cherry barb 2 inches (5 cm)/ Rosy barb 6 inches (15.2 cm)
Tank size10 gallons for Cherry barbs, 30 gallons for Rosy barbs
Water Temperature:Cherry barb 73 – 81 °F (23 – 27 °C) Rosy barb 64 – 72 °F (18 – 22 °C)

Cherry barbs, also known as Pethia conchonius are some of the smallest cleaning fish on this list with an adult size of only 2 inches.

Due to their small stature, Cherry barbs are more reserved and tend to shy away from others, so keeping them in a planted tank is a good idea.

Rosy barbs are bulkier than their scarlet cousins but are just as efficient at cleaning up messes.

They are also a bit more hardy and can handle colder temperatures than most other tropical fish. Rosy and cherry barbs are peaceful schooling fish, so a tank size of about 30 gallons is necessary to ensure you can include at least 5-6 of them at a time.

5. Pygmy suckermouth – Otocinclus affinis

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (6)

by capyle3

Maximum size:2 inches (5 centimeters)
Tank size20 gallons and above
Water Temperature:69.8 – 78.8 °F (21 – 26 °C)

Pygmy suckermouths (Otocinclus affinis) are schooling fish with an inclination towards cleanliness.

With a minute size of only 2 inches, these fish can clean even the hardest spots to reach.

Even though they need to be kept in groups of at least 5, Pygmy suckermouths don’t take up a lot of space, so a 20-gallon tank should work just fine.

These tiny janitors are friendly by nature, so you won’t have to worry about any fights breaking out in your tank.

They do however prefer to be in the company of other like-minded species such as guppies and goldfish.

6. Royal Whiptail Catfish – Sturisoma panamense

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (7)

by geeurl

Maximum size:8 inches (20.3 centimeters)
Tank size30+ gallons
Water Temperature:73 – 79 °F (22.7 – 26 °C)

The royal whiptail catfish (Sturisoma panamense) is another bottom dweller that will scrub your tank clean.

Algae is a staple food in their diet, so these fish should be really helpful in suppressing its growth in your aquarium.

These fish aren’t small by any means and need at least 30 gallons of water to roam about undisturbed. Regardless of their size, however, they are quite calm and can freely interact with other docile fish, like dwarf cichlids.

In fact, you may mistake their peacefulness for lethargy as you’ll often find them idly sitting at the bottom of your tank.

7. True black molly – Poecilia sphenops

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (8)

by tgavrailov

Maximum size:5 inches (12.7 cm)
Tank size20-gallon tank or larger
Water Temperature:75 – 81°F (23.8 – 27.2°C)

True Black Mollies, also known as Poecilia sphenops, have voracious appetites, so you should make sure your tank can handle their high bioload.

In case it does, then their insatiable hunger will be an invaluable aid in the battle against algae.

If you want to enjoy the benefits of these dark-colored fish, then you should provide them with at least 20 gallons of water.

Thankfully, Black Mollies are peaceful, so you won’t have to worry about them causing problems to the other inhabitants of your tank.

Even though they’re generally calm, Black Mollies can easily get stressed if there aren’t any plants to provide them cover.

Including fast-growing, surface-level plants will help them overcome their anxiety and feel at ease.

Author’s note: True Black Mollies reproduce each month so they should be kept at a ratio of at least 2 females per one male.

8. Bristlenose pleco – Ancistrus cirrhosus

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (9)

by John q

Maximum size:overall species size is between 3 and 6 inches (7.6 to 15.25 cm) but there are many sub-species that don’t grow more than 4 inches or around 10 cm
Tank size30 gallons for the largest Bristlenose species
Water Temperature:65 to 79 °F (between 18 and 26 °C)

The Bristlenose pleco from the Ancistrus genus likes to take long strolls on the bottom of its tank while scavenging for leftover food and algae that it can get its fins on. As adults, Bristlenose plecos reach a whopping size of 6 inches from front to back.

Unsurprisingly, a fish of this size produces a lot of waste, which means you’ll need at least a 30-gallon tank so the byproducts of their vast appetite are cycled properly.

Even though these types of fish are peaceful by nature, you shouldn’t place them with species that may outcompete them for food.

In my opinion, it’s best to get a mixture of freshwater fish that dwell in multiple levels of the tank to avoid altercations.

Author’s note: Bristlenose plecos can survive in a wide range of water temperatures, which makes them suitable for both cold water and tropical fish tanks.

9. Juvenile Chinese algae eater – Gyrinocheilus aymonier

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (10)

by HellknowsJS

Maximum size:12 inches (30.5 centimeters)
Tank size55 gallons for juveniles and 100+ gallons for adults
Water Temperature:74 – 80 °F (23 – 27 °C)

The juvenile Chinese algae eater, also known as Gyrinocheilus aymonieri, is the biggest fish on this list with an adult size of 12 inches.

Unlike the other fish on this list, the Chinese algae eater can be aggressive to other fish species, so you should carefully research its tank mates beforehand.

If you’re a beginner in the hobby stay away from this fish.

Anyhow, Chinese Algae Eaters require a 30-gallon aquarium as a minimum, but it’s better to keep them in a larger tank.

This will give them more space to roam and will reduce the likelihood of an altercation as a result.

Try and include some sand and gravel at the lower levels to help these bottom feeders be more comfortable.

You will often find them sucking on rocks and glass within the tank.

Contrary to what you may believe, they’re not practicing their mating skills but feeding on algae instead.

As a final note, you should pay close attention to these sly fish as they are accomplished escape artists.

Making sure your aquarium is properly sealed is the best way to avoid an aquatic prison break.

10. Hillstream Loach – Sewellia lineolata

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (11)

by mickeybob00

Maximum size:up to 3 inches (around 7 cm)
Tank size55 gallons for a school of 3 to 4 fish
Water Temperature:68 to 75 °F (20 to 23.8 °C)

The final entry in this list is the unique-looking Hillstream Loach (Sewellia lineolata), which is about 3 inches in size.

This stingray look-alike needs a tank size of about 55 gallons, which may seem shocking for such a small fish, but there’s a good reason.

The hillstream loach is native to fast-moving streams and needs a lot of oxygen as a result. If there is not a sufficient amount of water flow and oxygen in your aquarium, they won’t survive for long.

What’s more, they are a subtropical fish species and as such won’t be compatible with the more popular tropical fish in the hobby.

Investing in a water pump will ensure your loach has the best chance of survival.

Hillstream Loaches are very calm and typically get along with most other freshwater species.

They spend the majority of their time stuck to the side of the glass, which can be pretty amusing.

Are there any other algae eaters besides aquarium fish?

If you want to add some diversity to your tank, then you might want to look into other aquatic animals that can assist in the cleaning of algae and debris.

Depending on the type of fish you have and how much algae you’re looking to clear up, animals like the ghost shrimp, mystery snails, and nerite snails can be integral members of your aquarium clean-up crew.

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (12)

by Shaqington

  • Ghost shrimp – Ghost shrimp (Palaemonetes paludosus), like to eat green algae as their primary food source. These shrimp typically require a tank of around 5-10 gallons.
  • Cherry shrimp – Cherry shrimp (Neocaridina davidi) eat soft green or brown algae that can be found on hard surfaces like decorations or glass. The size of the tank for cherry shrimp can be 5 gallons at its smallest, but 10 gallons is a better option for anyone that wants to add these aquatic critters.
  • Amano shrimp – Amano shrimp (Caridina multidentata) provide some of the best aquarium cleanings because they are good at eating multiple forms of algae, including hair, brush, string, and the dreaded black algae. They should live in a tank that is at least 10 gallons in size, more space is always encouraged. To learn more about species that can remove the hair algae in your tank, read more here.
  • Mystery Snail – If you’re dealing with a hair algae outbreak, then Mystery Snails (Pomacea bridgesii) might be just what you need.

    These snails have a taste for hair algae and will go the extra mile to scrape them off any aquarium surface.

    If you choose to go down this route, then you should have at least 5 gallons of water per snail.

  • Apple Snail – Apple snails (Pomacea maculata), can scrape off the algae from any part of your aquarium, but are a bit demanding when it comes to space.

    The minimum tank size for a single Apple snail is 10 gallons.

    Due to this, these snails are more suitable for larger aquariums.

  • Nerite Snail – Nerite snails (Vittina natalensis) eat green spot algae, which can sometimes be difficult to remove from the various spots in an aquarium.

    They can live in a tank as small as 5 gallons, so nerite snails are a good option for anyone with a lot of algae and limited space.

    They will also eat away some of the plant fungi as well.

How to prevent algae and pollution in your aquarium?

In my experience, algae growth isn’t completely avoidable, but there are things you can do to manage and prevent it.

Multiple forms of algae ranging from green, brown, and spot grow in different places in the tank.

All of these are microorganisms that require organic matter and light in order to grow.

As such, the best things you can do to minimize the risk of algal growth are to control the amount of light your tank gets exposed to and how much food your fish eat.

If any of these two factors go out of balance, then the algae will take advantage of the situation and start replicating.

Another thing that will help maintain your tank clean is regular water changes. Doing weekly water changes of 15 to 20 percent of the water will clear up the nitrate build up and stunt algae growth.

Having the right types of fish and plants can help to prevent algae and pollution before they get worse.

Both of these things, plus chemical use can serve as effective algae controls for your aquarium, but the use of animals is a more natural way of maintaining things.

My Final Thoughts

The use of freshwater cleaning fish in an aquarium is a very practical and convenient way to maintain the cleanliness of your tank.

Sure, there are other ways to keep algae from overgrowing, but none of them achieve any lasting results.

By using a clean-up crew, you keep the algae in your aquarium at bay for the long run.

10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers (2024)


10 Freshwater Fish That Will Help Clean Your Tank | Aquanswers? ›

Suckermouthed catfish like Common and Sailfin Plecos, Bristlenose and Otocinclus all graze algae and will “clean” the tank of it, but they do also need food in their own right if they are to grow, stay healthy and thrive.

What fish cleans a freshwater tank? ›

Suckermouthed catfish like Common and Sailfin Plecos, Bristlenose and Otocinclus all graze algae and will “clean” the tank of it, but they do also need food in their own right if they are to grow, stay healthy and thrive.

What fish cleans the water? ›

The two most commonly used cleaner fish are the lumpfish, Cyclopterus lumpus, and the ballan wrasse Labrus bergeylta. Lumpfish are distributed across the Atlantic ocean, ranging from Greenland to France, Hudson's Bay to New Jersey, and in high concentrations in the Bay of Fundy and St.

What fish will clean the bottom of the tank? ›

Geophagus translates to sand-sifter or eartheater. These fish will go to the bottom of your tank, grab mouthfuls of sand, sift through it, and then spit it out. This process will be repeated all day long.

What eats algae in freshwater? ›

In general, snails, shrimp, Otocinclus, the Siamese algae eater, and the bristlenose pleco are regarded as the best algae eaters for freshwater aquariums. However, you're most likely to come across and could be recommended a few other species, like Chinese algae eaters, common plecos, and Corydoras.

Which fish clean algae? ›

Siamese Algae Eater

Their downturned mouths are well-suited for eating hair algae, black beard algae, and leftover scraps in the fish tank. SAEs are known to tend to eat more algae as juveniles because the adults are big enough to get the lion's share of feedings in the aquarium.

What fish clean parasites off other fish? ›

The cleaner fishes of the wrasse genus Labroides (Labridae) are well known for their role in the removal of parasites from larger carnivorous fishes. The larger fishes recognize the cleaner fish and will not devour it.

Will shrimp clean my tank? ›

While keeping shrimp is a very different experience than keeping tropical fish, they are great for keeping your tank clean from algae and food waste and they are fun to observe. These sociable creatures will definitely create an animated environment and they are quite easy to care for.

What fish cleans shark mouth? ›

The shark and remora relationship benefits both species. Remoras eat scraps of prey dropped by the shark. They also feed off of parasites on the shark's skin and in its mouth. This makes the shark happy because the parasites would otherwise irritate the shark.

What fish flops out of water? ›

Mullet are commonly seen leaping out of the water. Why do they do this? Over the years there have been numerous theories concerning the leaping of mullet. There seems to be two categories of leaping: predator avoidance and aerial respiration.

What gets rid of fish poop in tank? ›

Vacuum the Gravel Fish feces, shed scales, uneaten food, dead bits of plants, and other debris will settle to the bottom of your tank. Vacuuming the gravel every week will remove much of this debris and refresh the tank, brightening the gravel and keeping the tank healthier.

Which fish clean aquarium glass? ›

Otocinclus catfish, stiphodon gobies, and bristlenose plecos are the best algae eaters for cleaning your glass. Mystery snails and nerite snails are great invertebrate options for keeping your glass free of algae.

Are there any freshwater starfish? ›

Purely marine animals, there are no freshwater sea stars, and only a few live in brackish water.

What kills algae immediately? ›

Chlorine is still one of the most effective killers of algae so doing a super-chlorination of 10-20 ppm of chlorine can go a long way towards wiping out the algae. Liquid chlorine is an ideal shock for algae because it is fast acting and does not add cyanuric acid (CYA) or calcium to the water.

What kills algae naturally? ›

Barley straw. Barley straw is a natural way to fight algae. On contact with water, the straw starts to break down, and as it does so it releases peroxides into the water which combat algae. Available in mini bales, or as a concentrated extract of barley straw liquid, it's a natural way of chemically fighting algae.

What kills algae in freshwater tank? ›

Change the water regularly to keep nutrients low and if you have plants, use a liquid fertiliser to actually strengthen the plants and help them to fight off algae naturally. If the tank contains no live plants then you can use nitrate and phosphate resins to soak up those spare nutrients and starve the algae.

What kills algae but not fish? ›

The best method to remove green algae is a UV light. This will zap the algae in suspension continuously and not harm your fish in any way.

Do catfish clean tanks? ›

Every tropical tank needs a catfish! They help keep the tank clean by eating algae and, as they are bottom feeders, will also eat any food particles that have remained un-eaten by the other fish in the tank.

What fish have no parasites? ›

Species of large tuna that are considered free of parasites include: Albacore, Yellowfin, Blackfin, Bluefin, Bigeye, Longtail, and Karasick. Fluke, Grouper, Jack, Bass, Trout, small Tuna, and Salmon (aquacultured and wild) may contain parasites and should be frozen for parasite destruction.

What fish have parasite worms? ›

What is anisakiasis? Anisakiasis, or herring worm disease, is a parasitic disease caused by nematodes (worms) that attach to the wall of the esophagus, stomach, or intestine. The best ways to prevent this disease is to avoid eating raw or undercooked fish or squid.

How many shrimp do I need to keep my tank clean? ›

Shrimp are very small and have a lower output of metabolic waste than fish, so they can be kept in smaller tanks/more densely populated conditions. With that said, I wouldn't push it; it is best to do a maximum of 10-15 shrimp per five gallons.

Should I remove fish when cleaning tank? ›

Before you begin.

It's best to keep your fish in the fish tank when you clean. Removing them causes unnecessary stress for your fish, and you run the risk of accidentally hurting them. It is possible to keep your fish in the tank while you clean because you don't need to remove all the water to clean the tank properly.

Do snails clean your fish tank? ›

Almost all freshwater snails are beneficial scavengers that eat algae, dead plants, dead fish, extra fish food and other waste. This cleaning ability makes them an outstanding addition to your freshwater tank.

What fish cleans whale mouth? ›

Remora Temporal range:
Family:Echeneidae Rafinesque, 1810
8 more rows

What fish can swallow a shark whole? ›

Sperm whales have been cut open to reveal entire sharks and squid that had been swallowed whole, as well as other flotsam. Their jaws aren't designed for “chewing”—thus, they are adept at swallowing whole prey.

What fish cleans whales? ›

Remoras — also known as suckerfish or whalesuckers — are strange, even for fish. They hitch rides with cetaceans, sharks and other larger creatures of the deep, attaching to them by means of a “sucking disc” that sits on their head like a flat, sticky hat.

Do any fish get thirsty? ›

In conclusion, fish don't get thirsty like humans or other animals. They have evolved to live in water and have adapted their bodies to regulate the salt and water balance through osmosis and special cells called ionocytes.

What fish jump at night? ›

That's most likely a mullet. Mullet (Mugil cephalus) are common jumpers and there are several theories about this behavior. Some scientists believe they leap from the water when pursued by predators.

What fish can dry out? ›

Life of an African lungfish

To manage this life-threatening situation, the lungfish secretes a thin layer of mucus around itself that dries into a cocoon. It can live out of water in this cocoon for up to a year, breathing through its lungs until rains refill its waterway.

Is fish poop toxic to fish? ›

Well the good news is, fish poo should provide all the nutrients your plants require in any aquaponic system. The bad news is, if fish poo is allowed to accumulate it will almost certainly eventually kill your fish. It's all a matter of balance – once again! Fortunately, it's a balance that Nature helps us achieve.

Where do you put fish when cleaning a tank? ›

Use a small bowl, mug or cup that has been thoroughly rinsed with distilled water as a temporary tank. Never place fish in containers that have been washed with soaps, as even a small amount of residue can be toxic. In a pinch, you can also use a large plastic zip bag.

Why is my fish poop hanging from the fish? ›

Constipation in fish is typically revealed by bloating and the production of stringy feces. Normal fish feces will immediately fall to the substrate; constipated fish feces will appear stringy and hang from the fish.

Is there a fish that cleans the tank? ›

You may even have searched for fish that clean the tank. In freshwater aquariums, “Plecos” (short for plecostomus and used to refer to fish of the family Loricariidae) are one of the most common fish purchased to aid in algae cleanup.

How many fish can go in a tank? ›

The most widely known rule for stocking a tank is the one inch of fish per one or two gallons of water rule.

How many fish can I put in a 10 gallon tank? ›

Going by the numbers, however, you can put up to 8 to 10 fish in a 10-gallon aquarium tank. However, we would not recommend adding 10 fish in a tank unless the fish are tiny and do not generate too much waste. On the other hand, if you have chosen fish types that grow over time, you should limit the number to 8 or 6.

Is there a freshwater seahorse? ›

Seahorses are primarily marine fish, although a few species have been found living in brackish rivers. The seahorse occasionally sold as “freshwater seahorses” are actually freshwater pipefish. These are related to seahorses, but true seahorses cannot live in fresh water.

Are there any freshwater octopus? ›

Despite some fun legends about giant lake octopuses, there's no such thing as a freshwater octopus. And that's because octopuses' bodies are built for saltwater, and no known octopus species in the very long history of octopus species have adapted to live out its life in freshwater.

Are there any freshwater squid? ›


Will Dawn dish soap remove algae? ›

Jill put a squeeze of Dawn liquid soap in a bucket and filled it about halfway with water. She dunked her car wash brush in and went to work. Jill says that she barely had to scrub it. The Dawn took the algae right off.

What destroys green algae? ›

Chlorine is the only chemical that acually kills algae. It acts in the same way as setting fire to the algae, it oxidises it. When you have a bloom of green algae in your pool then by far the best thing to do it to blast it with a shock dose of unstabilised chlorine.

What does vinegar do to algae? ›

If you have an algae problem, your best friend is white vinegar. White vinegar can quickly kill algae but is not harmful to birds, insects and the majority of plants. Use a mixture of one part water to one part white vinegar to spray down the area and kill the algae.

How do I keep my aquarium algae free? ›

Perform water changes: The single most important way to avoid algae is to perform regular water changes. Change 10 to 15 percent of your aquarium water every week to lower nutrients in the water. This will remove the nitrate that accumulates in aquariums, which is one of the main fertilizers for plants.

What eats up algae? ›

Zooplankton, tadpoles, and crustaceans eat algae. Many aquatic consumers such as zooplankton, tadpoles, algae eater (algivore), small fish, crustaceans, and water-dwelling insects eat algae as their primary food source.

Why does my freshwater tank have so much algae? ›

Causes of Algae in Aquariums

Too much light or too many nutrients in the water will cause algae to grow rapidly. If you experience algae overgrowth, it could be caused by: Leaving house lights on too long. The tank receiving too much direct sunlight.

What eats green hair algae in freshwater tank? ›

Amano Shrimp (Caridina multidentata)

These guys are some of the best algae eaters around. They are known to eat most types of string and hair algae, such as the commonly found green hair algae. Some hobbyists claim they can even tackle the dreaded black beard algae, making them perfect additions to planted tanks.

What is a natural remedy for algae in fish tank? ›

Here are some of the things you can do to reduce and manage algae in your freshwater aquarium.
  1. Stock algae-eating fish.
  2. Avoid overfeeding.
  3. Keep up with water change and tank maintenance.
  4. Manage artificial light in your aquarium.
  5. Avoid direct sunlight.
  6. Utilize live plants.
Apr 6, 2023

Do you need an algae eater in a freshwater tank? ›

Do You Need an Algae Eater? There are many ways to control algae in the tank, and you do not necessarily need an algae eater to combat the problem. Because an algae eater means one more fish or creature in the tank, its needs have to be considered as well, and it may be best to control the algae in other ways, such as…

What fish cleans sharks teeth? ›

The shark and remora relationship benefits both species. Remoras eat scraps of prey dropped by the shark. They also feed off of parasites on the shark's skin and in its mouth. This makes the shark happy because the parasites would otherwise irritate the shark.

How do I keep my freshwater tank algae free? ›

Perform water changes: The single most important way to avoid algae is to perform regular water changes. Change 10 to 15 percent of your aquarium water every week to lower nutrients in the water. This will remove the nitrate that accumulates in aquariums, which is one of the main fertilizers for plants.

What fish eat green algae on glass? ›

Many freshwater tropical fish are great algae eaters in their own rite. Livebearers including Black Mollies, Fancy Guppies, Platys, and swordtails eat string algae and sometimes white beard algae. Guppies and Endler's Livebearers also do a number on the green algae in a tank.

What is the name of the fish that suction to glass? ›

Plecos attach themselves to hard surfaces with specially adapted mouthparts. They are scavengers and will eat almost anything! Great for beginner hobbyists in a community tank. Plecos spend most of their time on the bottom or sides of the aquarium and are most active at night.

How do I keep my aquarium glass crystal clear? ›

Table of Contents
  1. Regular Maintenance.
  2. Correct Filtration.
  3. Eradicate Algae From Your Aquarium.
  4. Reduce Nitrates and Phosphates.
  5. Use a Water Treatment or Clarifier.
  6. Reduce Waste in your Tank.
  7. Maintaining Crystal Clear Water.
Oct 2, 2020

Do snails clean fish tanks? ›

Almost all freshwater snails are beneficial scavengers that eat algae, dead plants, dead fish, extra fish food and other waste. This cleaning ability makes them an outstanding addition to your freshwater tank. Freshwater snails also come in many colors, shapes and sizes.

What is the dentist fish? ›

The tiny cleaner wrasse will go right into the larger fish's mouth or gills and remove parasites and mucus right off of the sharp teeth, much like our human dentist uses a dental pick to clean plaque off of human teeth.

What fish will sharks not eat? ›

When pilot fish are young, they gather around jellyfish and drifting seaweeds. Pilot fish follow sharks because other animals which might eat them will not come near a shark. In return, sharks do not eat pilot fish because pilot fish eat their parasites. This is called a "mutualist" relationship.

What fish can swallow a shark? ›

People who fish for a living see the darnedest things.

Like this mammoth grouper, that looks like it's from the Stone Age, come from deep to devour a reef shark whole in one swallow.


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Introduction: My name is Otha Schamberger, I am a vast, good, healthy, cheerful, energetic, gorgeous, magnificent person who loves writing and wants to share my knowledge and understanding with you.