Sick Blenny

[Dasgruenegesich]

I have a black sailfin blenny that I moved from my 30g up into my 90g thinking that he'd find more food.
He has been in the 90g for about 1.5 weeks and today he started to turn gray.
Is he sick? Is he stressed? Is there anything I can do for him?
I was thinking about moving him back into the 30; but it'll be very hard to catch him....
Any advice will be appreciated

Thank you.
Sandra

 

[Jerry W]

Color fade can be stress related. Is anything pestering the blenny? Is it eating? If water parameters are in check and the fish is not being molested, it might just need some time to adapt. I'd simply observe the fish for a few days to see if the color returns to normal and that no other symptoms crop up.