I just got a blue dotted Jawfish and need another option for his den. I have one side of the tank in a 4" deep send bed with a hollow live rock (pic below) but for now he keeps hiding under some of the other live rock. Just need another option to make sure he finds a permanent happy home. It should be about 3 to 5 inches long. I just didn't want to go to the PVC route. Thanks



