Sand sifting dragon goby getting skinny?

[redtang]

My sand sifting dragon goby is getting skinny, and not sifting the sand anymore. I have had him for about a month. Could he have eaten all the food in the sand, and be starving. He use to eat seaweed selects also, but has stopped doing this also.

 

[alti]

how old is the tank and how nuch lr and ls do you have?

 

[redtang]

Tank has been up for 1 year. there is a 100 Lbs. LR, and 100 Lbs. LS.

 

[alti]

wow, id be surprised if he could eat all the life with that much sand and rock. are there any other sandsifting of pod eating fish in the tank?