Not sure it will be a true perruno catfish, more likely leiarius marmoratus, however, perruno will grow to 24" and need a tank of at least 6 ft* 3ft wide * 2 ft deep so about 240 gal, and the leiarius is more likely to max out at 30" and whilst that size tank would house him (and I say house and not be ideal) if kept alone, realistically 8 ft long would be better and of course bigger, better still.