I Found this in Whitby. I think it is just a mineral in the rock but I am not sure if it is a fossil fish scale. I found 2 of these in the same rock. It was hard to take a picture of it but at the bottom you can see if whole it would be a circle, but as said i think it is a mineral, but I just want a second opinion- do you think it's a fish scale or a mineral? It is that little black dot
The specimen seems to have various fragments in it, of which the dark piece is just one. They might be fossil or they might be fragments of other stones. If fossil, yes the dark piece could be a fish scale (of which there are lots of types). We really don't have enough to go on.
If you get yourself a hand lens, you would be able to see much more - for instance surface texture might indicate a fish scale.