Great looking Nigerian and most definitely a male!
Yeah it tried to have fun with my big girl Croc (Dabola endli), she was actually trying to swim away from him and he would pursue. Finally she just realized he was smaller and nipped at him. He has backed off her since then. I had to laugh that the fish was only in the tank for an hour and it wanted to get freaky already. So I take that as a sign of it being happy in the new tank,