Im just getting back into the larger tank (135 cube in the works) and i was wondering if you can keep more than one species of gobies together? i had a pair of yellows in my old tank (which i plan on getting another pair) i was wonder if i could say have a pair of twin spotts as well? i know that the Yellows stick to there burrows so im assuming this will be ok but just thought i d post the question here first. thanks to all