I am a new owner of discus fish I’ve had my water tested by my local fish shop all good. My fish are 1 week new in my tank they stay low in the dark and freak out when im around. No fin clamping or darkness on fish. Fish are 4″. I have three discus in a 3foot tank with 4 catfish. I thought maybe I should introduce more discus and they might start to come out.
1. Catfish is not advisable to mix with discus.
2. You can add in another three discus. They will do well.