Yeah, he was kept in a tiny, overstocked tank before I got him. He was in a 30ltr tank (I think. It looked a little bigger than my 20ltr one, but nowhere near as big as my 50ltr one) with roughly 15-20 assorted tetras. And I doubt the guy done regular water changes, he's a 'fish only need water' type of guy. :/It's a CAE, I've seen mixed growth on them; some get monstrous, others stay tiny, often this happens if they are bullied for food and out competed too
He'll probably be just fine lifespan wise etc IMO...
Since I've had him he's been in with my betta, minus a small 4-5 month period spent in with my goldfish in the 200ltr tank they had. We put him in there to see if he'd grow at all.. He didn't, so he went back with my betta. I think he feels safer in with the betta, the goldfish harrased him a lot, but he's one of the biggest fish in the bettas tank currently, second only to Bruce himself (Bruce being my betta)..
Thanks for your help.