They'll excavate out from under the rocks if they haven't found a suitable hole. Quite normal. Also, try and avoid similar looking fish that use the same areas of the tank... Bicolor Blennies for example unless you have a large tank.
Good Luck
Mike
agree, totally normal behavior...beautiful fish but as mentioned they become insane around others and similar...
agree, totally normal behavior...beautiful fish but as mentioned they become insane around others and similar...
My Royal Gramma Basslet for the last few days has been digging a cave under my base rock.