Mystery Crust

[PhishFriends]

Bought this snail a couple months ago, and this week this pink crust showed up and has I believe grown and brightened up. Coralline? Is seems to glow more than most coralline species I've seen.

 

[PhishFriends]

Typical Coraline for comparison

 

[IKD]

Corraline that is dead/dying can turn a bright pink color (under blue lighting).

 

[WheatToast]

Do you have pictures under white light (ex. with a flashlight)?
Coralline algae and various other red macroalgae will fluoresce as they die.

 

[PhishFriends]

Could be that because the tip seems more bare than the rest of the shell. It's is still pink under white. Hard to get a good angle on it.

 

[IKD]

Looks like dead/dying algae to me

 

[WheatToast]

Could be that because the tip seems more bare than the rest of the shell. It's is still pink under white. Hard to get a good angle on it.

Not sure exactly what you mean here. Looking at the photo, it looks like there is coralline algae on the top of the snail and a different, harmless red encrusting macroalgae towards the base, such as Peyssonnelia or Hildenbrandia. If the coralline is dying, it should eventually turn white.