Merpersons

[don of tallahassee]

I'm sorry, but I have to disagree. In none of the three Voynich merperson images I show does it look to me like it is a fish's mouth rather than a removable tail. It looks like all three Voynich merpersons and the other Hunterian merperson are in the same basic body position and performing the same action - to me, anyway.
 
I wonder if others besides yourself also see the fish mouth rather than a removable tail in any of the images? Maybe my eyes are getting too weak to be doing this?

Are there other opinions?

Thank you.

Don of Tallahassee