Tyee Sucker

Distinguished from all other species of Catostomus by having the following combination of characters: 65-80 scales on lateral line; 9-12 dorsal fin with rays; 14-38 infraorbital pores; gill 24-31 gill rakers in specimens >20 cm SL; gill rakers with spines in clusters; caudal peduncle depth 6.4-9.3% SL; lateral fields of scales with either no radii or extensions of anterior radii; and foramen for the ninth cranial nerve between the exoccipital and prootic (Ref. 87374).

Dorsal soft rays (total): 912

Found in coastal streams and lakes as well as in brackish water. Observed in large schools, following the tide and venturing some distance into brackish water . Spawns over gravel and cobble (Ref. 87374).