Just what kind of "cover" is required for gobies? I have a light canopy that completely covers the tank (that is, sits on the rim...) This is clearly enough, right? Or, do these fish aimlessly leap into the air, meaning he could impale himself on the reflector or burn himself on one of the lamps? In that case, do I need an eggcrate top?
(Don't mean to hijack Nano, just seems like the appropriate thread in which to ask the question...)