Crystal Crustaceans

This creature would have a similar model to Mowzies Mobs. It would spawn into the crystal cave biome(under review). The creature would glow in the dark. It would be passive, and try to run from you like the cat would. It could be tamed by giving it crystal. Right clicking a tamed one would give you one crystal a day. Honestly I think this thing would be cute. If attacked they would go into their shell. If tamed and taken into a cave it would be like a mobile torch due to the light it gives off.