Lately I have really been eyeing a couple different species of rainbow fish, and really want to a 55 gallon rainbow only tank. Question is how many rainbows should fit comfortably in a 55. I've read that rainbow are very active and need lots of swimming room, so I don't want to go by the standard 1" per gallon rule. I've never kept any rainbows my self so sure could use some advice from those who have.
TIA!
TIA!