While fish are pretty simple pets, the options for feeding them often are not. Fish food is often a combination of nutrients and minerals that fish need in aquariums or ponds that they wouldn't get otherwise because they are not exposed to their natural habitat. The types of food usually come in flakes, pellets, or tablets, depending on the specific kind.

Pellets tend to sink more rapidly and are therefore used more for larger fish such as catfish. However, larger fish can also be fed live food, such as earthworms and feeder fish, because fish tend to be meat eaters However, there are also some that are herbivores, and some that are omnivores. Larger fish and some smaller fish also tend to dwell near the bottom, which is why it is important to feed them heavier food.

When going on vacation, owners can feed their fish food blocks, which release small gobs of food over time as they dissolve in the water. While this food is good for smaller types of fish, it can also pollute the water, resulting in more harm than food for your pet.Three ingredients in fish food are usually carbohydrates, fats, and amino acids, and the flakes are usually composed of fish meal, shrimp meal, or octopus meal. There are also bring shrimp blocks. The most common manufacturers of this type of food include Hagen, Hikari, Tetra, and Wardley, and the can be purchased at any pet food store or special fish store. Usually, the food is in cans and the cheapest
kinds of food is flakes, which can start as low as $1.50.

Be careful when putting together an aquarium to also buy fish that don't try to eat each other. More dominant and territorial fish can do this, even if they are the same size as other fish.