i like how you can so many different types of fish like the blood red parrots, flowerhorns, and the different catfishes but there is a huge problem with them someone might release them and then with have a species that wouldn't excist naturally and is also invasive depending upon the location i live in the colder parts so i know tropical fish wouldn't live here but there are spotted gars lots of bass bluegills some minnows i like the little sticklebacks theyre always playing and they build these little dome nests i was on vacation once and the person who was supposed to feed em didnt, they turned canabilistic theyre fun though like little spiky pirahna's just not with a bad rep and im getting off track but oh well but the different types of goldfish might become invasive so they could wreak alot of havoc also considering that no wild fish has seen them before and wont know what to think and they wont have any natural predator anywhere so i like hybrids but i think people need to be pretty careful 

