So, i have a chance to get a 14-16" Clarias Batrachus for free (they are legal here). I have a Lap in my 125 he would be going in. The only thing i am worried about is it the clarias will either stress the Lap with its constant swimming and messing around or just eat its food (they are hogs). I have kept several clarias before and have never had any trouble with them, but always in a "overstocked" and well fed set up.