Largescale Stoneroller Campostoma oligolepis
This species was found at 38 bioassessment sites, 2 rapid fish bioassessment sites, 12 fisheries assessment sites, and 0 fisheries presence-only assessment sites. In total, it was collected at 50 distinct sites, or 3.4% of the 1472 total sites monitored by the bioassessment program. It is the 68th most commonly collected species.
The Largescale Stoneroller was collected in 81 bioassessment sampling sessions and 52 fisheries assessment sessions. It was present in 2 rapid bioassessment sessions and 0 presence-only sessions.
The biological assessment program has collected a total of 5,767 individual Largescale Stoneroller specimens, ranking it the #41 most collected fish.
Elongate body that is nearly round in cross section. The snout slightly overhangs a sub-terminal mouth, which lacks a barbel. A cartilaginous and chisel-shaped lower jaw is a distinctive feature. Slightly hooked pharyngeal teeth are found in a 4-4 arrangement. Lateral line scale counts range from 41 to 49, and circumferential scale counts vary from 30 to 38 with total lateral and circumferential scale counts from 71 to 87. Dorsal, anal and pelvic fins have 8 rays, and the pectoral fins have 16 rays. The long intestine is completely coiled around the air bladder and is covered with a black peritoneum. Body color is dark olive on the back and sides with a marked difference to the white belly, and the sides have a mottled look because of the scattered dark scales. Breeding males develop dark colors and tubercles, but lack the dark bar across the anal fin and tubercles between the nostrils.
HUC12 watersheds where this species has been found