I had read on an earlier thread (which I didn't want to hijack) that most vents and other thumbs shouldn't be kept in groups because of aggression. Really what I want to know is if 4 adult iquitos would be safe, happy and prolific in a 18x18x24 Exo. Or if I would've better off setting up a smaller victor just a pair or trio? I was under the impression that they are ok in groups and I have the froglets growing ou in a 5.5 ATM w no problems at all. All input is appreciated.