Well I have to do a biology project dealing with feeding goldfish aspirin and seeing if that'll affect their growth. This is all taking place over a 10 week period. I need 10 goldfish and i went to a local pet shop and theyre 4 dollars for one. I can't spend more than 50 dollars for my project. HELP! Does anyone know a type of fish that's really cheap and lives for a long period of a time and a pet store that sells cheap fish? Plus I need help on taking care of fish and tips. PLEASE. it's an emergency! Also I will not be putting the fish in tanks, they'll be put in bowls. HELP!