If you are asking about Aquarium fish , and your parent/s told you not to ,then don't. Fish can eat most foods that humans eat . Fish in the wild will eat vegetable matter , some eat meat , and some fish eat both. Many fish are omnivores, that is they will eat just about anything. The size of the food is determined by the size of the mouth , and whether or not it has teeth , which serve to bite off food bits small enough to fit into the mouth.
they cant have all types of human food
You cant.
a fish can swim in the water for ever but a human cant
fish food is a great food for cray fish
no we cant as we have lungs and fish have gills...
You cant buy it you click on food NEVER ENDING food.
No, because it can be poisonous to the fish and they will eventually die. So, I recommend feeding them fish food.
nothing
no they cant cause they are nasty!
Human and fish and piranha
You can't. Fish's have a 4 second memory, you cant tell them to do anything.
Even greater than their use as human food, fish are a vital source of fertilizer. The blood and the bone of fish make a good fertilizer.