Its been discussed before that as the fish get bigger the tanks typically get smaller. Example a neon tetra in a 10g has more room than a silver aro in a 300g.
I was wondering, what are thoughts on fish posted here like nile perch and barramundi? Does everyone posting these have a custom 5-10,000 gallon tank? I read all the time about people getting the rundown about aros and RTC's needing bigger tanks, but what about these even more demanding specimens?

I was wondering, what are thoughts on fish posted here like nile perch and barramundi? Does everyone posting these have a custom 5-10,000 gallon tank? I read all the time about people getting the rundown about aros and RTC's needing bigger tanks, but what about these even more demanding specimens?