i have a pictus catfish and a paradise fish, i am looking at reducing tanks, i was wondering if i can put these to together - the pictus is only a little bigger then the paradise fish.
It entirely depends on the size of the tank - pictus catfish are really really active and since they and the paradise fish have the potential to get to 4-5 inches each they both need a reasonable sized tank.
So my advice would be if its a 4ft tank or an extra wide 3ft tank yes it could work, only problem being that the pictus could get a little too boisterous for the paradise fish but since they inhabit different regions it might not be a problem, as far as aggression from the paradise fish goes, no worries pictus are often kept with far more aggressive fish.
However if the tank is smaller than either of the above I dont think it will work, mainly because each of those fish deserve at least 35/40 gallon tanks.