SoulFish, when are you going to get yourself an aquarium handbook? Axelrod (founding father of the aquarium hobby in the US) had a wonderful dictionary of aquarium fish published back in the sixties that is still in print today and considered one of the foremost guides in discriptions of fish. But even the run-of-the-mill books have at least a small guide of the most common fish. Trust me, if you stay in this hobby long enough, even with only a five gallon tank, you will find such a book well worth the investment.
~~Colesea