"Tonga" blenny usually refers to Atrosalarias fuscus, which is a very different fish. Do some quick searches on those two that I mentioned and see which it is. Ecsenius sp. have a very characteristic face and mouth--they all look that way. Enchelyurus flavipes, on the other hand, does not have that same look at all. It's difficult to describe, but it is very different.Blenny: Yes, he's much darker than bicolors I've seen live and online. The LFS guy described him as a "Tongan" blenny ... does that map to one of the species Amp mentioned? Whatever he is, I'm definitely enjoying him -- seems to be getting more comfortable each day.
Snails: Ok, I'll keep watch and give them a flip when needed.
Stocking: Right now it's just the blenny, cleaner shrimp, and snails. I would like to try another jawfish down the road, and also some free swimming fish like clowns, a dwarf angel, or something. I think I'll skip any plans for a royal gramma -- based on a youtube vid I saw of a RG going after a bicolor blenny.
Thanks for the comments!
Here's the generalized facial look of an Ecsenius species:
There may be slight variations, like stripes over the eyes, etc. across species, but it is pretty much the same.