Does your goby have a small blue stripe on his cheek? If he does you have a goldenhead/yellowhead sleeper goby ( valenciennea strigata ). To keep these fish for a good length of time you must have a very established sand bed. This fish can get to 7 inches. Much larger than a standard watchman goby.
As BOB_I said, they sift for worms and other types of food in your sand. They have been known to wipe out a healthy sandbed in smaller tanks then slowly starve to death. They have also been known to topple rock when sifting to much by moving the sandbed.
As previously said, try to get the food down to the goby and hopfully he will be interested. Overall they are a great fish..... if you can get them to eat. Oh ya, I recall hearing that it takes them awhile to start eating when introduced to new tanks as well. Hopfully that is the case.
Good luck and let us know how it is going
Cheers
__________________
I bent My Wookie
|