It depends if your fish are aggressive and atempted to eat the little fish
fish eats atta fish eats mummy
John Dory eat a variety of small schooling fish. The are poor swimming and rely on the element of surprise to catch their prey.
any fish that eats the muck off the surface of rocks or boats or any other object under the water
An animal that eats fish is called a piscivore. Some animals, like bears or alligators, only eat some fish, and are therefor partially piscivorous. Other animals live exclusively on fish, like seals, and are completely piscivorous.
Baby perch typically feed on small organisms such as zooplankton and insect larvae. As they grow, they transition to a diet of small fish and crustaceans. In an aquarium setting, they can be fed with brine shrimp, bloodworms, and commercial fish food designed for small carnivorous fish.
If, when other fish are in the same environment as piranhas, the other fish are eaten, then piranhas are a type of fish that eats other fish. your welcome
it eats other fish
Seals and any other big animal eats cow fish.
Other fish.
Grouper and other Lion Fish.
Other fish, birds and bears
other fish
Cleaner fish by Jay
When a fish dies other fish eat it because it might be hungry or it depends on what kind of fish you have that will eat the dead fish.like me when I have a dead fish my Osacar fish eats the fish because it a type of fish that eats other fishes.hope it helps. Bye
other insects and fish
Other types of fish and, of course, humans.
An ogre fish eats other fish. They are 1000m deep in the ocean.