to answer your question: hes a stressed kelberi. As for why hes stressed, you have much too small of a tank for any fish in it. The clown knife might be okay for another month or two but realistically that kelberi needs at minimum a tank twice that big, and long term that arow and clown knife need a 8 ft by 4 ft wide tank but your upgrade is a great start. Theyre stressed because theyre cramped and arent happy. Bass are amazing fish, especially because they can really show their emotions through color beyond what I feel most other fish do. To the point I try to photograph my fish after a water change followed by a large feeding because their colors go beyond wonderful [as in my profile photo]. While your kel is just probably beginning to enter its coloring up phase [kels tend to color up later than many other bass, but its usually felt prolonged as well because they dont grow as fast either], what you feed him and the room you give him will help him develop leaps and bounds. It might also help to get him 2 or 3 other kels to school with after you have your upgrade tank. You definitely love your monster fish! Look forward to seeing your progress with them.
