Okay, I rescued this little guy from the 'sorted american cichlid' tank at the evil Walmart. I have no way of posting a picture, so I will try my hand at a description.

He is roughly 2'' in length right now, but I think he is a juvenile.

In the store aquarium he was jet black with just a few blue speckles on his sides. Now that he is in quarentine he is light grey with dark grey vertical stripes, a darker grey lateral line running down his side and a dark grey spot at the base of his tail fin. He has the faintest hint of orange on his dorsal fin, but none that I can see on his tail.

What is he?