* Coalfish: This is a common name for the fish Pollachius virens, a cod-like fish found in the North Atlantic. They are sometimes called "coley" in some regions, but this is not a widely used name.
* Cusk: This is a fish called Brosme brosme, also found in the North Atlantic. It's a lean, white-fleshed fish that is often compared to cod in terms of taste and texture.
It's important to be specific when talking about fish species, as different names can be used in different regions. If you can provide more context about where you heard the term "Coley fish," I can help you identify the actual fish you're looking for.