blenny what?

first i thought my blenny was a lawnmower. after a closer look at google, i became sure it wasn't. can you please ID this one for me. its a sandsifter for sure. ty.
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I'm betting it's a goby...will see if i can figure out which one...

 

That's a goby but I can't remember the name.

 

I want to say it's a Diamond Watchman Goby but I have only seen them with more of an Orangish spots. IdK. Good luck mate!

 

This might help:

Gobioid Research Institute

 

Looks like a juvenile Ornate Goby. How big is it?

 

hows this for comparison? my fish on the left, decorated goby on the right. did my research pay off?
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its about 3 inches. is that the same as decorated goby?

 

Istigobius decoratus (decorated goby) and Istigobius ornatus (ornate goby) are different species although they are darn near impossible to tell from one another (to the laymen) until they are full grown. (Even to the wholesalers who ship them to your LFS...trust me. LOL) When full grown, ornates are smaller than decorated gobies.

It doesn't much matter though. Their care needs are exactly the same. A mature sandbed that has a lot of life in it. In addition to that, make sure some meaty foods (mysis, enriched brine, shredded krill, etc) make it to the top of the sandbed for them to eat. If the fish that stay in the water column are aggressive feeders and nothing makes it to the bottom, you might need to use a turkey baster to bypass their hungry mouths.

 

you're right inwall, it doesn't matter. but i was still curiuos about its real name so here's another shot.

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this is an ornate goby. now this looks much like mine. ornate it is then. thanks to all for the help.;D