We've got a small purple reef lobster that we purcahsed about 3 days ago.He's quickly found himself a hidding spot in a cave under the live rock. When he came out today i noticed he's only got 3 legs left!! i was wondering if anyone knows if that is normal or perhaps one of my shrimp has attacked him?I have a corral bannded ( who's missing his two big pincher claws, but he was discounted at the LFS so i bought him anyway) and a skunk cleaner. Also, he will regenerate them right?