Bolivian Ram holding back side fin???

#1
I just noticed this today, and I don't know if it's been this way for a while or not, but the side fin on one side has been constantly held against his body. It looks like its all there, just flat against him.

It doesn't look like anything else is wrong.

I did recently add a Kribensis, and it seemed like they were fine together, but I did see the Kribensis "attack" or nip at him before I noticed the fin. Don't know if it was related or not tho.

Any suggestions? Just keep an eye on it? Should I be looking for anything specific?

Thanks!!!
 

#2
oh, checked on him again, and saw the fin was out again, but not moving quite as well as the other side.

then the two of them were side by side, just fine then the ram moved back and the Kribensis got a little closer and the Ram seemed anxious and held that fin back for a brief moment.

Maybe the Krib did nip at the fin or something?