improper molting

I have had my horseshoe crabs for 3 years, they have molted several times over the years however I encountered an issue that non of the forms I have read have covered my horseshoe crab had a molt but something went wrong, he cracked the shell open before fully exiting the shell and then he got...

I recently noticed when feeding that my tiger pistol shrimp lost his large front claws! :( Prior to the pincher loss, he normal and healthy, he would always hide in the burrow and would occasionally leave with the Watchman Goby, especially when feeding. I was feeding and he wouldn't completely...