Marbled walking catfish

Marbled walking catfish I have a 13" marbled walking catfish. He has been on his own for the past 2 years and having brought a new tank and I have just tried him with my 14" plec, but he is just causing havoc chasing the plec all around the tank. As I plan to have more fish in the tank he has to find a new home. He will make a nice feature fish on his own with no other fish in the tank. I am asking £10 but open to offers.