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Mountain Sucker
Common

Mountain Sucker

Catostomus platyrhynchus

A small freshwater sucker fish native to western North America with a flattened head and inferior mouth adapted for feeding on algae and small invertebrates from rocky surfaces.

The record

Mountain Sucker at a glance

Scientific name
Catostomus platyrhynchus
Typical size
4-8 inches, under 1 lb
Water
Freshwater
Habitat
Freshwater
Rarity in the Fishdex™
Common
Where it lives

Habitat

Found in clear, cold streams and rivers with rocky or gravelly bottoms in mountainous regions. Not typically targeted by anglers as they are small and not considered gamefish, but occasionally caught incidentally while fishing for trout in mountain streams.

Catch one and it is yours

Log a mountain sucker through the Cobia Camera and this entry fills in with your photo, your personal best, and the exact conditions on the day. The app also carries the slot and season rules for wherever you are standing.

How the Fishdex™ works
Questions

Mountain Sucker questions people ask

Mountain Sucker is Catostomus platyrhynchus.

A typical mountain sucker runs 4-8 inches, under 1 lb. Cobia records the length and weight of every mountain sucker you log and keeps your personal best on its Fishdex entry.

Found in clear, cold streams and rivers with rocky or gravelly bottoms in mountainous regions. Not typically targeted by anglers as they are small and not considered gamefish, but occasionally caught incidentally while fishing for trout in mountain streams. It is a fresh water species, filed under freshwater in the Fishdex.

Yes. Log one through the Cobia Camera and this entry fills in with your own photo, your personal best, and the conditions on the day you caught it. The app also carries the slot limits and season dates for wherever you are standing. It is free.

Free on iPhone

Tomorrow morning starts tonight

Set your home water, pick a drive radius, and wake up to a plan.

Download Cobia on the App Store Android coming soon

iPhone, iOS 17 or later. Setup takes about a minute.