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The Daily Insight

Do pygmy corys eat algae?

Author

James Craig

Updated on May 08, 2026

What do they eat? Many people think that these fish can live by only eating plants or algae but the truth is that they are meaty food eaters. You can feed them frozen food, algae pellets, flake food just make sure that the food is small enough for them to be able to swallow as they have rather small mouths.

Then, will corys eat algae?

No, Cory Catfish do not eat algae. While they may eat the occasional algae wafer, you shouldn't expect them to eat any algae growing on your tank walls or aquarium decorations.

Secondly, do Cory catfish clean the tank? Clean. As a small bottom feeder, the cory catfish is an extremely efficient cleaner. It will scavenge the leftovers that have sunk to the bottom, cleaning up after messier fish that feed at the surface and midlevel of the tank. This makes it easier for the catfish to dig for stray bits of food at the bottom.

Keeping this in view, what do Pygmy corys eat?

Pygmy cory diet

Pygmy cories can be fed frozen foods (bloodworms, mosquito larvae, brine shrimp), catfish pellets, flake foods, and the occasional algae pellet. Make sure the food is small enough to fit into their tiny mouth, though, or they won't be able to eat it!

What will eat algae in my fish tank?

  • Bristlenose Plecostomus (Bristlenose plecos) Bristlenose plecos are a great addition to most aquariums.
  • Siamese Algae Eater.
  • Chinese Algae Eater.
  • Otocinclus Catfish.
  • Twig Catfish.
  • Nerite Snail.
  • Cherry Shrimp.
  • Amano Shrimp.

Related Question Answers

What eats algae in a pond?

Fish that clean ponds by eating algae and other debris include the common pleco, the mosquitofish, the Siamese algae eater and the grass carp. Be careful with carp, koi and other bottom feeders. While they eat algae, they can also make your pond look dirty.

Do rainbow sharks eat algae?

Rainbow sharks are not picky herbivorous and omnivorous eaters, but are primarily consumers of algae in the form of tablets, wafers and flakes. They also eat live foods, such as insect larvae, tubifex worms, periphyton, crustaceans, phytoplankton, zooplankton and aquatic insects.

Will corys eat shrimp?

And Corys can really be interesting as they feed and interact with different types of snails and shrimp. Its not uncommon for Corys to feed right next to their tank mates. They seem able to get along without scaring some of their smaller tank mates away.

Can Panda Corys eat algae wafers?

Corydoras are not strictly herbivorous, but most of their diet consists of plant matter, algae, and veggies, which makes these Hikari Algae Wafers more than ideal. Hikari Tropical Algae Wafers are perfect for hard to feed bottom feeding fish. They are also designed to be easy to digest.

What will eat green hair algae?

If your local fish store doesn't have a nice selection of marine iguanas (that was a joke), another option to help get the green hair algae under control is to add some livestock that will eat it. Emerald crabs, Yellow tangs, and lawnmower blennies are two animals with a taste for green hair algae.

How big do Pygmy corys get?

The maximum length of the species is about 3.2 centimeters (1.3 in), but typical adult sizes are 1.9 centimeters (0.75 in) for males and 2.5 centimeters (1.0 in) for females. In addition to their larger length, females are also rounder and broader than males, especially when they have eggs.

Do turtles eat algae?

Some turtles are carnivores, while others follow a strictly vegetarian diet. Most turtles, however, are omnivores, eating both animals and plants. Sea turtles, depending on the species, may eat seagrasses, algae, sponges, sea squirts, squid, shrimp, crabs, jellyfish, cuttlefish or sea cucumbers.

How many OTOS are in a 10 gallon?

A 10 gallon tank is suitable for for a small group (4-6) of Otocinclus. You can keep adding more fish to your group, each addition fish needs a couple of gallons.

Can pygmy corys live with shrimp?

This species is very popular with many shrimp keepers due to its exceptionally small size and peaceful disposition. The Pygmy Cory Catfish is a very peaceful schooling fish that is compatible with most nano aquarium animals. It might eat dwarf shrimp fry, but is generally safe to keep with adult dwarf shrimp.

How many pygmy corys are in a 15 gallon?

Stephen Hiatt. JeffK said: I used to keep pygmy cories in a 15 gal community (24 x 12 x 12).

Do pygmy corys eat shrimp?

Pygmy cories devour baby brine shrimp. But they won't touch your cherry or crystal reds. I've never heard of them eating shrimplets unless they're dead or insanely slow. These guys aren't hunters, so they're not going to be super active to get their food.

How many pygmy corys are in a 20 gallon?

Registered. I have one of my bettas in a 20 gallon long aquarium with 8 pygmy corys.

Do pygmy corys need sand?

For pygmy cories, sand is frankly essential.

How many pygmy corys are in a gallon?

Keeping Pygmy Cory Together

They often shoal (which is rare for a bottom-dweller) and may even swim in groups in the mid-levels of the tank (which is even rarer). Keep them in groups of at least four or more, but eight is recommended.

Can pygmy corys live with bettas?

As to the OP's question, not only are pygmy cories not suitable to a ten gallon tank, they are a poor choice for tank mates for bettas.

Will pygmy corys eat snails?

They will definitely eat snail eggs like candy and will eat snails if they are small enough. Most of my carnivorous fish eat snails. You'd be surprised how vicious pygmy livebearers can be to inverts if you keep the feeding schedule tight.

Do corydoras eat biofilm?

Corys are mainly carnivores and definitely not algae-eaters. They might try to eat the biofilm in the algae and therefor remove it.

Why do my cory catfish keep dying?

Corys aren't algae eaters, they get little to no nutrition from it, they need a catfish pellet & live or frozen food such as bloodworm, daphnia, brine shrimp etc, that could be why you're losing them as they're not getting the right food.

How many Cory catfish should be kept together?

As a relatively small fish, they crave safety in numbers, so a group of six corydoras or more (all of the same species) is highly suggested. These peaceful bottom dwellers can be kept with pretty much any community fish that won't eat or attack them.

Why do my catfish keep dying?

Usually what happens is a disease outbreak, or more often, an oxygen depletion and a fish kill. With a disease outbreak many fish may die but many others usually survive. However, oxygen depletions often are catastrophic with few catfish surviving, particularly large fish do not survive.

Why do cory catfish swim to the top of the tank?

Matt Clarke explains why Corydoras catfish sometimes take gulps of air from the water surface. Most fish wouldn't be able to withstand this, but Corydoras can gulp air from the surface and use their posterior intestine to extract oxygen from it and pass it into their blood where it's needed.

Can you overfeed Cory catfish?

If you overfeed, they will get bloated. And whatever extra food they don't consume will fall in between your substrate and foul your water very quickly.

How long can cory catfish go without food?

Overview chart for individual fasting tolerances of popular freshwater fish
Type of fish: Period it can safely live with no food:
Swordtail fish maximum of 14 days
Corydora catfish up to 2 weeks
Barbs up to 14 days
Discus up to 14 days

Do Cory catfish get lonely?

Cory catfish are small, peaceful, bottom-dwelling scavengers that are beloved by all who have owned them. Virtually all Cory species should be kept in schools; stories of single Corys pining away from loneliness are not uncommon. Corys should be kept only with small to medium-sized peaceful fish.

Can you mix different types of Cory catfish?

Corydoras, Brochis and Aspidoras species are shoaling fish, meaning they like to hang out together. Different species can be mixed, and they will often group together. For best results, they should be purchased in groups of 5 or more. They can be kept with most peaceful community fish.

Why do corys swimming up and down?

Both are fairly common and normal with cories. Up and down the walls it seems like they are playing with their reflections or if you have a male and female maybe breeding. Up and down mid tank just means they are usually going up for air. You may want to get one or two more cories as they like to be in groups of 3+.

What will eat fish poop?

Just in case you were wondering, there is no such thing as 'fish poop eaters' know to the hobby. In other words, there is no species of fish that will eat poop from your sand, even the so-called cleaner crew like cories, and bristlenose plecos. Shrimp and snails will also not eat fish waste.

How do I make my fish tank crystal clear?

How to get crystal clear aquarium water
  1. Filtration. Filtration is the most fundamental way that we keep aquarium water clear.
  2. Chemical filtration. Chemical filtration works by absorbing or adsorbing things from the water.
  3. Bacteria. Some strains of bacteria can also be added to aquarium water to help to clear it.
  4. Fish.
  5. Food.
  6. Water changes.
  7. Flocculants.
  8. Light.

Why is my algae eater eating my fish?

This is perfectly normal behavior. Even if your grandma didn't feed the fish at all, a weekend without food isn't really a concern. It's possible your normal food isn't high enough quality so the "algae eater" decided to find some additional nutrients. They dont usually attack fish for no reason.

How do you stop brown algae from growing?

Preventing Brown Algae
  1. Add reverse osmosis water to a water source that is high in nitrate or silica.
  2. Change the water regularly.
  3. Clean the aquarium regularly.

What is the smallest algae eater?

otocinclus catfish

Why does my fish tank grow algae so fast?

Like plants, all species of algae need light, water and nutrients to grow. If an aquarium is near a window, algae will grow faster, even if the aquarium does not receive direct sunlight. Leaving the aquarium lights on for more than eight hours a day can also cause rapid algae growth.

How do I get rid of algae in my fish tank naturally?

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.

Do goldfish eat algae eaters?

Yes, goldfish do eat algae. Goldfish are omnivores. They eat both plant and meat-based food.

How do you get rid of green spot algae?

The cure for spot algae is to scrub or scrape off surfaces. 1? Spot algae can only be mechanically removed. On glass tanks, scraping with a razor blade is very effective.