my hermit crab(blue legged) keep locking up and i have to force them to separate

[iAmARomeoSF]

are they fighting should i be worried what should i do if they are fighting? perhaps they are mating? please let me know any advice here would be appreciated thanks

 

[Hemmdog]

How big is that tank? Is there food for them? Is there extra shells that are larger than theirs if they are trying to molt?

 

[Tuan’s Reef]

this is what hermits do. They will sometimes fight and kill each other for shells. Make sure you have a variety of empty shells so they don’t to kill for a new home. They will absolutely kill your snails if they need a new home. It’s all very normal