I’m new with gulper catfish and I want an opinion from someone experienced with this fish so my gulper I would say 4” that I got 2-3 weeks ago has stopped eating it ate 2 times I fed it talapia since where I got it from that’s what it ate it’s the same exact kind to I want to switch it’s diet but for a little I’m going to stick with talapia yesterday I introduced an Oscar in the tank it is 5” and the tank is a 40 gallon I’m going to move the gulper to a 75 gallon when he gets bigger and the Oscar to a 125 I just think he is to small for it right now but this tank is not fully cycled yet I have done it before I put fish the same day well this tank cycled for a week before and I think the cycle is almost done I put in seachem safe and stability daily so the amonia is not toxic for the fish and if it doesn’t end I will just put a sponge filter in but the gulper is refusing food it’s last feeding was 4 days ago but since he is a baby I want to get him to eat once every 3-4 days is this a good amount for him should it be more or should it be less? And he isn’t eating it what can the reason be