I have a chance to get a 3.5 inch male black calvus. I currently have 15 Cyprichromis (1.5 inches), and 4 Synodontis (a bit below 1 inch). Is it safe to put the calvus in this tank, or will he try to eat my other fish? I’ve never had a calvus, but their mouths seem pretty big! Also, would he likely hide most of the time, or be out and about? Thanks!
