This is just a guess, but could it be because you moved several of them into a new environment that they started fighting which caused the losses?
I say this cause i was at the LFS the other day asking the shop owner if he wanted some marbles to sell, but he declined stating that whenever people give them to him, they start fighting in his tanks causing losses of claws or even death, even though they all came from the same batch in some one else's tanks...
I say this cause i was at the LFS the other day asking the shop owner if he wanted some marbles to sell, but he declined stating that whenever people give them to him, they start fighting in his tanks causing losses of claws or even death, even though they all came from the same batch in some one else's tanks...