I know what your saying David about the aro in that odd tank. But the aro actually looked pretty comfortable in there..surprisingly! Watched him eat 40 or so crickets in 1 sitting in that tank with no signs of curved spine or anything. He told me the rtc tried to eat him and ended up killing him. Now he's got big cichlids in there from what i hearshould probably upgrade to something more than a 6', a 30" arowana in a 48" square tank would be spending all day chasing its tail. I'd love to see a pic of that tank, it would nearly have to be 4' tall to be over 400g, the ultimate cube tank! [not being sarcastic or anything, would genuinely be interested in seeing the tank, especially with that stock]
RD I agree that some of the information on LOL is a bit OTT, like the one-in-a-billion maximum size of 16", but I do agree with the recommendation to grow out young clowns in a tank with plenty of length for swimming if you want them to attain a decent size and not become obese and/or stunted.
RD....Do you have any info on obese clown loaches and potential abbreviation of lifespan? A couple in my collection are superfat. They have been in an 8ft tank while they've gotten this way. They get plenty of swimming exercise but have insatiable appetites. They might need diets i think and some need to up the food, but like you said before..some clowns just genetically aren't meant to grow huge. They seem healthy but do look like they could blow up some day