Picasso hosting issues

[M.Maddox]

I have a pair of picassos that attempt, but fail, to host in my S. haddoni. They instantly get stuck and the anemone starts trying to eat them. Any ideas why this may be?

 

[jkrentz2515]

How healthy are they, and what size? They should be able to swim out.

 

[Ncastro1981]

slime coat should help resist that. health? age in aquarium?