Is it normal behavior for a Diamond Head Goby to disappear for weeks at a time? I have heard that in pairs, the female (when pregnant) will seclude herself in a burrow for over a month at a time, but I own only one of these fish, and I am not aware of its sex. It has been MIA for at least a month now, and I've wondered all along if it has died, but do not have any conclusive information.
Any input is appreciated.
Ryan