Could you keep a male Betta with Glowlight Tetras and female Guppies? I'm not familiar with how nippy Glowlights are. (By the way, I think there would be 8 Glowlights and 4 female Guppies, along with 2 Otos.) I was planning on getting a female Betta or 2, but then I thought maybe I could get a male, since my mum loves those so much. Well, that is, if I get that 20 gal long I want...my parents kinda hinted to me they would get it for me, although I offered to pay with my money in the bank. It's an awesome deal--"Oak trimmed" 20GL tank, "oak" fluorescent hood, awesome Bio-Wheel filter for up to 50 gal, and heater, for just $100 U.S. Back on subject, the female Gups would be fine, wouldn't they, since they don't have the long finnage of males?