I need to know all about my fish

Here, a google search will tell you everything there is to know about a species. Searching by species name will yield the most hits. To find the species name you want, search for it's common name. Most pages about the fish will have the species name listed. Just copy it, go back, and paste it into the google search box.
Also see the Articles here at Petfish.net (http://www.petfish.net/kb/1/)