Do Cory Catfish Eat Algae: Which Fish Are Most Effective Algae Eaters?

Algae is a type of plant found in both fresh and saltwater. It is a type of photosynthesis that uses the sun’s energy to produce food for marine life. Algae can be found in both new and saltwater, but it is more common in salty water because it needs salt to survive. Cory catfish are native to South America and are not often found in North America.

Cory catfish do not eat algae; they are a type of fish that eat other fish, invertebrates, and frozen food. Some people think that cory catfish eat algae because they have long barbels on the bottom of their heads that look like they could reach down into the water and grab algae. However, research has not shown this to be true.

What Do Cory Catfish Eat?

Other things that cory catfish may consume include insects, worms, small fish, and the foods indicated below. Consult with a fish expert before giving your catfish any specific dietary requirements, but if you do not have enough time and are in a rush, you may look for the following food for your pets:

Bottom Feeder Pellets

Bottom feeder pellets are a type of feed used to supplement the diet of fish such as cory catfish. They are made from various ingredients, including cereals, vegetables, and meats. These pellets can offer several benefits to your fish, including increased activity and growth.

Tropical Sinking Wafers

Tropical sinking wafers are a type of feed used to supply the nutritional needs of tropical fish. They are made from plants, grains, and meat which helps these fish to thrive in warm climates. In addition, they promote algae growth, which can aid in the buffering of your fish’s pH balance. In addition, these wafers are generally easier on the fins and gills of your pet fish, which can help them deal with any potential stress. In addition, tropical sinking wafers should be seen as an option for cory catfish nutrition. In addition, they will allow you to feed a plant-based diet that contains all the vitamins necessary for healthy growth.

Freeze Dried Bloodworms

Freeze-dried bloodworms are another type of feed that many cory catfish owners use to supplement their fish’s diet. These worms are high in protein and provide many nutrients addition; they are also high in vitamins B, C, and E. Because they are freeze-dried, most of the nutrients have already been extracted from them. As a result, these worms will not provide any additional vitamins or minerals that you need to supplement your catfish’s diet. Therefore, bloodworms should be seen as an option for cory catfish nutrition because they offer high protein levels and help feed algae resulting in more lively fish.

What Kinds of Fish Will Eat Algae?

Bristlenose Pleco

Some people believe that bristle nose plecos are great for cory catfish because they consume a lot of algae. In addition, you can feed these fish various types of food, including live and freeze-dried worms, bloodworms, and pellets. They also enjoy small pieces of meat such as krill or shrimp.

Siamese Algae Eater

The Siamese algae eater is a freshwater fish known for its ability to consume large amounts of algae. These fish have slim bodies and are usually orange or pink in color. They can be fed chiefly live or frozen food, but they also enjoy small pieces of meat such as worms, shrimp, and krill.


Some mollies are known for being algae eaters. These fish have interesting markings and can grow to be quite large. You should feed them various live and frozen food, including worms, shrimp, krill, pre-cooked fishmeal pellets or flakes, bloodworms, or chopped fresh vegetables.

Otocinclus Catfish

These fish are usually yellow, black, or green and can grow up to 2 inches long and should be fed a diet of bloodworms.

What Are Other Algae Eaters?


Another good algae eater for your aquarium is the snail. Snails possess many different adaptations that make them well suited to consuming algae. First, they have a wide range of feeding mechanisms, including their tentacles to grab food particles and suck them up through their snout. Second, they can digest complex foods, which helps them consume nutrient-rich plants and organisms.


Crabs also make an excellent choice for an algae eater in your aquarium. They have a wide mouth and sharp claws, which allow them to crush algae particles. Furthermore, they can move around the tank quickly and consume food items that other fish may not be able to reach.


Shrimp is another good algae eater for your aquarium. They possess powerful jaws and claws, which help them mince the food and consume it whole. In addition, they can swim quickly around the tank, so they can easily find food items that other fish may miss.

How Can I Control Algae Growth?

There are several ways that you can control algae growth in your aquarium. Some include adding freshwater plants, creating an artificial reef system, and using constrictors or cougars as predators to eat smaller fish.

Less Fish Food

One way to reduce the number of algae your fish will eat is to feed them less. This means providing them with a variety of nutritious foods rather than just relying on algae as their primary source of nutrition.

Avoid Too Much Sunlight

Cover the windows with opaque material if your aquarium is in direct sunlight. This will help reduce the amount of light that reaches the tank and promote algae growth.

Add Aquatic Plants

Adding live plants to your tank can help control algae growth. This is because the plants will intercept sunlight and prevent it from reaching the fish. In addition, the leaves of plants will provide oxygen to the water, which provides a benefit for both you and your fish.

Water Changes

Another way to control algae growth is to change some of your aquarium water weekly. This will help keep the tank clean and reduce the number of nutrients promoting algae growth.

Regular Cleaning

One final tip is to clean your tank regularly. This will help remove food and waste that may promote algae growth. In addition, it will help to remove any parasites, as well.