hi, my red tailed cat is currently 24". he is in a 260 gallon tank which measures 4'x4'x2' deep and has a sump tank which holds about 60 gallons.
the tigershovelnose cats are about 13" and 15" long at the moment. they are housed in a 4' x1.5'x1.5' tank (soon to be moved to my redtail tank. the arowana is currently only about 4" long.
the plan is to have a large indoor pond built. it should hold just less that 4500litres when finished. this wil house all my largeer fish.