Goby ID please!!

Caught this chap today. My first ever goby so I am a complete novice for identifying them. Help is appreciated!!!!


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I think it may be a rock goby, simply because on his first fin I remember seeing a small band of cream/yellow which I believe is not present on the black goby.


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Looks like a rock goby to me

I'd say it's a rock goby too, if the yellowy/cream colour is present on that fin.