many fish are tiny so there are lots of species of "tiny fish." different types of fish need different foods. bettas need a special betta food, some brands come in fakes. goldfish need goldfish flakes. and tropical fish like tetras, barbs, danios, glofish, guppies and angelfish need tropical fish flakes. piranahs like dead goldfish, so if you have a goldfish and a pirannah and the goldfish dies before the pirranah you could feed the goldfish to the piranah. oher kinds of fish like different things. most fish that live in ponds can get their food by fining it at the bottom of the pond so you don't need to feed them very much. if this doesn't help you should ask somebody who works at a pet store what you should feed your "tiny fish."
The tiny fish eat whatever the sharks don't eat and it keeps them clean.
they eat like tiny fish
Butterfly Fish eat tiny shrimp, worms, and algae.
I think they eat fish
Salmon fish eat flies.
Small squid eat shrimp.
tiny food. Cabage or flakes
Bluegills eat insects, worms, tiny fish, fish eggs, even algae.
They can eat (suck on) very finely grated cooked and raw lean meat. Bettas are insectivorous fish and eat tiny living crustacea and insect larvae in their natural state. There are specialised Betta foods available at good pet shops.
Fish eat all sorts of different foods from plant matter to other fish.
phytoplankton and plants
I'm guessing they can.