Flathead Chub Platygobio gracilis
This species was found at 33 bioassessment sites, 0 rapid fish bioassessment sites, 2 fisheries assessment sites, and 0 fisheries presence-only assessment sites. In total, it was collected at 35 distinct sites, or 2.3% of the 1522 total sites monitored by the bioassessment program. It is the 75th most commonly collected species.
The Flathead Chub was collected in 52 bioassessment sampling sessions and 2 fisheries assessment sessions. It was present in 0 rapid bioassessment sessions and 0 presence-only sessions.
The biological assessment program has collected a total of 839 individual Flathead Chub specimens, ranking it the #65 most collected fish.
Flathead Chubs have a body adapted for life in strong currents. The most distinctive characters are their strongly depressed head and large sickle-shaped pectoral fins. A large, sub-terminal mouth has a barbel at the corner of the jaw. Pharyngeal teeth are arranged in a pattern of 2, 4-4, 2. The dorsal, anal, and pelvic fins have 8 rays, while the pectoral fins have 16 to 19 rays. The lower lobe of the caudal fin is usually darker than the upper lobe. A complete lateral line has 48 to 57 scales. These chubs are straw to brown-colored on the back, shading to silver on the sides and belly.
HUC12 watersheds where this species has been found