My red-tail shark keeps bothering my Kissing fish. Is this a problem? Should I remove the Red tail? I have large 55gal tank with plenty of places to hide.
Is it happening all over the tank or is he just territorial in one area? You could try putting in visual barriers such as plants so that each fish has their own defined territory. But often once they start targeting a fish they don’t stop.
You could try re-arranging the decor but it's likely that you'll need to remove the Red Tail. This is a common issue with them as they mature.
Its in the nature of red tailed black sharks that's why I've kept them with aggressive Malawi cichlids, their not suitable in general community aquariums.