Also, DO NOT get a diamond goby without a completely sealed tank lid. Not a mesh one, not one with a few gaps. Completely covered. They are some of the greatest escape artists known to man, dont be like me and figure this out the hard way.I have a yellow watchman goby and pistol pair in my 90gal but I REALLY WANT a diamond goby. I'm going to try but if things get bad I'll rehome the diamond. Don't want to kill anything