Longnose sucker

The body of the longnose sucker is long and round with dark olive or grey sides and top and a light underside. They are up to 64 cm (25 in) in total length and weigh up to 3.3 kg (7.3 lb).[3]

Longnose suckers are easily confused with white suckers (Catostomus commersoni), which appear very similar. However, longnose suckers can be distinguished by their comparatively finer scales.[4]

The longnose sucker is distinctive for its physical characteristics.

First, the long nose- the longnose sucker, as the name suggests, has an elongated snout which helps it be distinguished among other suckers. The elongated snout has the potential to be one-third of the total body length. Second, the suction disk- The longnose sucker has a circular suction disc on the ventral side, located near the mouth. This suction disc is an adaptation that allows the longnose sucker to attach itself to rocks and substrate in a fast-moving environment.

Third, large scales- the longnose sucker had large and prominent scales that cover the body. These large scales provide protection from potential predators.

The longnose sucker inhabits cold, clear waters, including lakes, pools, rivers and streams, and occasionally also brackish waters. In North America, it ranges north from the Columbia, Delaware, Missouri and Monongahela river basins, as well as the Great Lakes basin.[3] The Russian population, which sometimes is referred to as the Siberian sucker (C. c. rostratus), is found in the Yana, Indigirka, Alazeya and Kolyma river basins.[5]

It is a bottom-feeding fish, eating aquatic plants, algae, and small invertebrates. They are preyed upon by larger predatory fish, such as bass, walleye, trout, northern pike, muskellunge and burbot.

They are fished for game and food and also used as bait to catch the larger predators. The International Game Fish Association (IGFA) world record sits at 6 pounds 9 ounces (3.0 kg) taken from the St. Joseph River in Michigan on December 2, 1989 by angler Ben Knoll.[6][7]^{: 101–102}

The long nose sucker is a freshwater fish native to North America, particularily found in rivers and lakes. Its relationship with humans is based around recreational fishing and their conservation efforts.

In recreational fishing, the long nose suckers are occasionally targeted by anglers for sport or as bait fish. They provide a challenge to anglers as they have strong fighting abilities. Longnose suckers are not sought after for feeding, typically a catch and release situation for the long nose sucker.

The long nose sucker plays a crucial and vital ecological role as they are bottom feeders. As bottom feeders, the long nose suckers consume detritus and algae while stirring up the sediment. The bottom feeding behavior helps maintain the water quality and helps improve the health of the aquatic ecosystem.

As for conservation, the longnose sucker faces habitat loss, water pollution, and competition from invasive species. Trout Unlimited, a conservation organization, focus of restoration of habitat, water quality improvement and research initiatives to protect and enhance longnose sucker populations.

During the spring, when water temperatures rise, longnose suckers migrate to their spawning grounds in rivers and streams. Males develop tubercles on their heads and bodies, indicating their readiness to breed. They compete for the attention of females by displaying vibrant colors and engaging in energetic courtship behaviors. Once a female selects a mate, they engage in an elaborate spawning ritual. The female releases her eggs while the male fertilizes them externally. After spawning, the adults return to their regular habitats, leaving the eggs to develop and hatch. The young longnose suckers then begin their journey, growing and adapting to their environment. The breeding life of longnose suckers contributes to the biodiversity and vitality of freshwater ecosystems.

• Rook, Earl J.S. (15 October 1999). "Catostomus catostomus Longnose Sucker". Flora, Fauna, Earth, and Sky...The Natural History of the Northwoods. The Swanson Party: A Boundary Waters Compendium. Archived from the original on 20 August 2016.
• Seaman (5 February 2002). "Longnose Sucker Catostomus catostomus". Sea Grant Fish of the Great Lakes. University of Wisconsin Sea Grant Institute. Archived from the original on 20 January 2008.
• Media related to Catostomus catostomus at Wikimedia Commons