They are slow growers and max out around 12 inches. Can be very agrressive. The sailfin can max out around 18 inches. L-114 are rarer and carnivores. While the sailfin or gibby is a vegitarian. I currently own a 10 inch L-114 and is my favorite fish. I have him in a 70 with some black bar silver dollars. I can't keep any other plecos in with him. With all his hooks and spines he gets his way. He ignores the silver dollars and a small BN pleco which is only 2 inches. Any pleco of considerable size he will not tolerate. I know some people that keep gibbys together without any issues.