Anemone sting/damage or black ich or.. ?

[tranceFusion]

I haven't added anything to my 25 gallon tank in 6 months, until yesterday. I added two rock flower anemones.

This morning I noticed that my tailspot blenny had a chunk missing from his tail and a couple of black spots.

Do you think he went to perch on one of the anemones and got stunk/stuck or is there some other disease going on?

I've also noticed my emerald crab has been very aggressive lately (pinching my finger when it's in the tank) and hanging out near the blenny's favorite hole.

 

[Jay Hemdal Verified Community Expert]

Tough to see clearly under blue light (photos taken under white lights are much better), but it could be a sting from the new anemones. I can't tell you what the emerald crab behavior is though...

Jay