rainbows can be pretty vicious acutally... i had 4, but now there is 1. The one male harrassed the other guys to death. He's the only rainbow in my tank for 4 years now.
here's his mug.
they need lots of space and a big female/male ratio.. 2:1 or 3:1 . more would be best.
here's his mug.

they need lots of space and a big female/male ratio.. 2:1 or 3:1 . more would be best.