Yep, that's definitely what I've been seeing. I don't have a good pic of his tail now. But I've been seeing that black thing every so often since he was 3 1/2 inches. Sometimes it even comes out while I'm cleaning his shell under the faucet and it touches my hand.

And he's not 4 inches yet, maybe that's why his nails look short.
You're so right, spotsmama. The back nails are a killer. Thanks for the advice on the neosporin.
