Best thing to do is lots and lots of research, especially if you want to be a zoologist. Google reputable sites (ones by universities journals etc), borrow from the library, find out as much as you can, then when you think you know it all... start researching again!
A(Mum), M(9 yo) & H (7 yo)
Sushi (fantail) & Lucky Fin (Lionhead) in 55L
6g Fluval Edge Betta tank in the pipeline