ahhh, the pile of used books on the bottom shelf of my little LFS recently would be lovely to hand to you but sadly that just would be too much trouble! While we wait for some true recommendations from the members, I'll mention that one approach you might consider if you're ambitious would be to just take the lists of fish in the species sections of our TFF subforums here and re-list them in a priority that you feel currently interests you. Then proceed to read all the TFF information, making notes as you go. From there jump perhaps to the wikipedia information, doing the same and taking notes. Then ultimately you might want to do some other searches and see what varying information you get from some other sites. If you don't get enough recommendations from members, you might consider whether Amazon or other booksellers on the web would have tropical fish hobby books show up in there searches and whether you could get them shipped to you.
~~waterdrop~~