Last night I came home to find my bumblebee goby dead in the backcorner of my tank. lately I've used a couple shrimp pellets and haven't had any frozen brine shrimp. Could he have starved or have fallen to my green spotted puffer? (who is normally very docile). I also have a peacock gudgeon, a brazillian puffer, 2 corys and 7 neon tetras.