Posted by guamturtle on November 24, 2002 at 18:14:25:
I bought 2 parrot fish a few weeks ago. One of them seems to be digging a hole in the corner of the tank. He/she constantly pics up gravel with his mouth and places it off in another area. The hole is getting fairly deep. Why is he/she doing this....could it be bored, or some type of territorial "thing".