Why is goldfish heterotroph?

How long will it take for fish fins to grow back? Will a fish die if moved to a different bowl? How do you pick a goldfish? What quilifications do you need to have to own a fishery? How old can calico fantails live up to? Is an eel an verdabred? What smell makes sharks go away? How big are piranhas? Are painted shells good for hermit crabs? If fish live under the sea and can survive without breathing air can they live in outer space? What type of aquaculture system is best suited to raise jellyfish? What can fish do? Do great white sharks hunt at night? What are clown fish communities? 5 gallon fish tank with 5 white clouds and 3 guppies you change water 20 percent per day is this ok? What tribe lives in huts made of wood and eats lots of fish? What vitiamins are great for hair? How fast can a great white shark grow? What kinda animal is a zebra bullhead shark? If Erin's aquarium has guppies zebrafish and goldfish She has 3 more guppies than zebrafish and she has twice as many zebrafish as goldfish If she has 23 fish how many of each type does she have?