What species of rhinogobius is this?

[mdjrnc]

I have a pair of rhinogobius that has layed eggs twice now and am trying to figure out what species it is. I've probably sat on Google for 5 hours total trying to find something that I can say is my fish but haven't found anything. Wandering if anyone had an idea.

 

[goatnad]

My guess would be rhinogobius brunneus.

https://upload.wikimedia.org/wikipe...s_brunneus.jpg/220px-Rhinogobius_brunneus.jpg

Looks very similar to yours. Sorry for the small image.

 

[mdjrnc]

Yes does look similar but the blue mouth throws me off a bit. Mine has a red highlight around his lips and bright red spotting on his cheeks. It's possible that is it the breannus and just a bit different looking but still throws me off.