These is terrible photo without a picture of the whole fish -- just the tail pretty much and the very back of the body. But I was lucky to get it at all.
It was a fairly large fish, ~1 ft long
I see there was another observation in exactly the same spot in 2012
I waited hoping it might swing back around since the channel up stream was pretty shallow.
observed by Chester Zarnoch
A flatfish is a member of the order (Pleuronectiformes) of ray-finned demersal fishes, also called the Heterosomata, sometimes classified as a suborder of Perciformes. In many species, both eyes lie on one side of the head, one or the other migrating through and around the head during development. Some species face their left sides upward, some face their right sides upward, and others face either side upward.