yeah, its not rhinogobius, the one phil posted is pretty close, and probably it, i just have not seen a picture yet. here comes the story with these guys
I've caught some similar ones in Hong Kong when I was younger, and the males had a real high hump on the head like the salaria sp. we've seen. I caught them in the ocean, and when I brought them home, I didn't have salt water, so I mixed table salt and water= no no in keeping salt water fish, but they lived. Then one day, one jumped out into the toilet while I was cleaning the tank out, remember I was only a kid, and I couldn't catch him, but days later, I saw him swim back out again. We had a different bathroom to use. He lived in there for weeks before he died! EWWW!!
Then later, some of the ones I had in my fish tank, they were biting my larger fish and when I would net them out, they would bite my hand even after its out of the water.
And the place where I caught them, I never found them again for years, due to pollution, etc...but back then, when the tide goes out, they would lay flat under rocks, in groups of 5-8, on just moist mud/silt, no water!!! So as of late, I thought maybe I had lost my mind and hallucinating, until I got this other one from India, resembled what I had before, but not quite the same. I've had this fish for almost one year now, and the other day when I was trying to relocate it. I caught him in a net, and scooped him out with my hands, guess what!! He bite my finger, so hard that it drew blood, then just looked at me and got ready to bite me again!!! My worker was right there and saw the whole incident. Definitely the coolest little monster I've ever kept. They're not stressed or afraid at all when out of water.