I've done 2 years of animal care, my 2 strongest subjects was exotics (fish included) and canine behaviour, but I am in no way an expert just more knowlegable than you lot on here, put together haha,
No seriously I have a hell of a lot to learn and pieces of paper mean nothing to me, it's all about experience in your chosen subject.
Anyway I can tell you yes that tank looks a bit small for the size of the fish, and yes they do grow to the size of the tank and yes it can mess up there insides, but I wouldn't worry to much about that, if you can move them to a bigger tank, if not then t