I purchased 2 small fahaka puffers over a month ago, I plan to keep one and rehome the other once I get them closer to a foot in length, I already have a 120 set aside for the adult I keep but im still needing to get a sump setup and cycled before I can move the puffers over. I'm currently housing them in a smaller divided tank (55 gallon) that I preform water changes on twice a week "as I would do with any grow out" and I'm wondering why the adult tank size matters for puffers while it doesn't for other grow outs I've raised in the past are they really stunted that easily? My puffers currently have something like 10 times their length and 5 times their size body length in depth also and that's on each of the tanks divider? That's plenty of swimming room even with the decorations I keep towards the bottom of the tank. I just want to know now If what I'm doing is hurting this fish or if what I'm doing in fine? Does the threads author mean it's bad for the fish with little to no water changes or what because I'm just wondering how over 25 gallons of fresh/clean water for each or my 2 inch fish can possibly be bad for or stunting them.