Large bruise like spot on lawnmower blenny!

[Dave Mrnak]

Hey guys,

I re aquascaped my tank today and this evening I noticed my blenny clearly on the brink of death. I felt the most humane way was to put him out of his misery.

He had the most unusual spot on his abdomen wall. I cant help but think I maybe somehow bruised him internally while movong my rocks around. Can anyone shed light on what they have seen in the past with the picture posted?

I feel terrible if this was my doing
Thanks in advance

 

[Big G]

Accidents happen. Don't beat yourself up. I did the same thing to a beautiful fish a few years ago.