Hee hee - fishies can be addictive, can't they? Don't have any currently but have in the past. No bettas, just neon tetras, mollies, zebra danios, tiger barbs, a little silver shark-looking guy that didn't stay little for long ... and a suicidal swordtail and his wife. Had to cover the tank after we got him, as he kept leaping out! Yikes!