I've tried new life spectrum marine fish and frozen brine shrimp, but I haven't seen him eat yet.
Water params are zero ammonia, zero nitrite, and zero nitrate. He's the only fish in the tank, but there are other inverts.
there are three "entrances" under the rock that the tiger pistol made and he is always right at then entrance of those.
The goby isn't breathing odd or anything....just very pale.
As for non-fish....there is the tiger pistol, that the goby is without doubt glued to, three peppermint shrimp, two emerald crabs (each about 1" across the legs and arrived with the LR
), two porcelain crabs, about 15 hermits, 5 snails, a small rock with zoas, and a small rock with some mushrooms.
 I forgot the small BTA that my friend found as he was disassembling his tank. He's leaving the country and gave me the LR
and all the life forms in the tank. The BTA has been moving all over the tank today[/EDIT]
The spots on him show up well, and there is a dark line by his mouth. It's just that he looks very pale.