Well I saw it again just now. Light have been about about an hour and it was out hunting shrimp. i'm embarrassed to say I still cant tell what it is. The tank was dark so I have no idea on color. leg length is confusing me too. They seem too long for vulgaris and too short for briareus. I can also tell the little guy had a few amputations at a young age. I'm still leaning toward briareus but I cant make the call yet.