Blue Linkia and Lawnmower Blenny went missing

[trav_shock]

In my 38 gallon tank I had a blue linkia star that appeared to be doing fine but after a few weeks it dissappeared. I also recently purchased a lawnmower blenny that vanished after one night. I was wondering if linkias can bury themselves in the sand and if I should be conserned with not being able to find my blenny. And if anyone has suggestions please help.

 

[PoukieBear]

How long have they been mising?

 

[trav_shock]

The blenny has been missing for about a week and the star has been missing for almost a month. They both seemed healthy when I added them to the tank.

 

[ColeBC]

My LMB used to hide for a week at the time in the beginning. Couple times I thought I had lost him but eventually he came out.
Now he eats frozen foods and seaweed from a clip.
I'd try to find him if he doesn't come out soon. Sometimes when fish die , it's almost impossible to find them. It's pretty important to get them out though.

 

[petermai]

check your nitrate. any difference?