Bump for great and rare cats. C'mon North East MFK!
I can attest that reaching such sizes is rare. I have had 6 of irwinis for 4 years, only one is currently 2'+, the other five are 12"-14" eyeballing. So to me this pair is pretty remarkable.
Butchie, my neighbor, said it well
B
BIG FISH BOB
I forgot about your pacu, mate, in addition to the RTC. Your pacu will bite the irwini's fins any time it pleases to supplement its diet. It might not kill an irwini right away but the fish will be miserable and constantly injured.
Such is my personal experience with large pacu 1.5'-2.5' and any large, peaceful, and timid Doradidae, such as Oxydoras niger, Pterodoras granulosus, Lithodoras dorsalis, and Megalodoras uranoscopus in 4000 gal.