i want some thing that will injoy a 59 gallon tank the tank is 2 foot high wide and long i hopeing for a surgesten of a fish that can grew as big as the tank allows and is happy and Peaceful i have 5 cory and 2 Bristlenose Plecostomids in there and 3 Zebra loachs i would like this fish to stand out as the main fish of the tank thanks