Ok so i am setting up a 180 "cool" water tank for my korean perch. Question is I have never owned any bagarius and prefer yarelli(I will suit them with a big tank before the flames come) and want to house it with the K. perch and no other bottom dwellers. Are these guys the type that eat stuff that fits in there mouth or that grabs stuff and shreds with those teeth? I will keep all fish the same size but is that good enough for a goonch?