actually this was the one i kept with the mbunas and julies, its a bit of a "misfit" tank. he was in there because the other goby had tore him to shreds. hes been in that tank happily for a few months, but i think it was ultimately my chailosi that did him in, because they were picking at him that day before i seperated him from the group.Julies & some lamps really pester gobies. I see that you have Julies, maybe they could have caused the death.
When I first tried gobies I thought they just needed spiriluna in their diet and that it wouldn't matter what else I fed as long as some was algae based. What otehr foods were you feeding?im guessing bloat got him, but i dont know why. because none of the other fish that need spirulina in their diet are effected.