Before I can address the needs of tank size, water temp., and general care, I need to know what species I'm dealing with. So... I'm asking what I want. Bimacs and vulgari(?) are the most popular. What are the pro's and con's of these two? What other species would be good for a beginner? Oh, and if we could avoid the "you don't know what you're doing, leave it to the experienced owners" talk, that'd be great. Thanks.