Magnifica's only have thin tentacles in captivity?

[Ardeus]

I have seen magnificas in the wild but I have never seen a single one with thin tentacles. I don't remember seeing any videos of them in the wild with thin tentacles either.

Is it something that only happens in our tanks?

Here's mine:

 

[Amoo]

No idea honestly. Mine's upset at the moment as one of my peppermint's got too close yesterday and it seems to be working to digest it. Outside of that???