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White Sucker

White Sucker

White Sucker is a native species found throughout Rhode Island's freshwater systems, with NatureServe listing the species as S5 (secure) in the state.

Scientific Name: Catostomus commersonii

Physical Characteristics:
  • These elongated, torpedo-shaped fish are characterized by their distinctive downward-facing sucker mouth with fleshy lips, olive brown to dark green coloration with lighter undersides, and prominent scales.
  • Adult White Suckers in Rhode Island typically reach 12-20 inches, though specimens up to 30 inches are possible, with most weighing 2-6 pounds.
  • During spring spawning season (mid-April through May), breeding males develop gold dorsal coloration and scarlet or black lateral stripes, along with prominent tubercles on their fins.

What to know

Habitat Distribution

  • In Rhode Island, they inhabit both riverine systems and lacustrine environments, utilizing tributary streams for spawning while adults may use larger water bodies for growth.

Specific Spots

  • Look for current breaks, eddies, deep pools, and slack water behind logjams and structure, particularly near tributary inlets.
  • They favor areas with submergent aquatic vegetation and can be found foraging in slow-moving pools or current breaks.
  • White Suckers require deep pools or tributary junctions with groundwater connections for summer and winter refugia.
  • Target areas with rocky or gravelly substrates, moderate current, and depths from shallow riffles to deeper pools where suckers forage along bottom structure.

White Sucker FAQ

Answers from onWater's species guide.

What are the best lures and bait for White Sucker in Rhode Island?

Small pieces of garden worms or nightcrawlers are the primary bait, fished directly on bottom.

What flies work for White Sucker in Rhode Island?

Effective patterns include small nymphs, scud patterns, wooly buggers, and worm imitations that sink quickly to the bottom.

When is the best time to fish for White Sucker in Rhode Island?

Prime season being immediately after ice-out through early summer. Spring sucker runs occur during April and May, but avoid targeting them during active spawning - instead fish the pre-spawn period in late March through early April and post-spawn summer months.

How do you catch White Sucker in Rhode Island?

Fish directly on bottom - smaller pieces improve hookup ratios though whole worms can attract larger fish. For fly fishing, fish must reach bottom to be effective - cast well upstream of visible fish and allow flies to sink completely.

What do White Sucker eat?

White Suckers are generalist benthic feeders that consume invertebrates, fish e.g.gs, algae, plant matter, chironomid larvae, mayflies, mollusks, small crustaceans, and detritus. They're opportunistic omnivores that can identify and expel unwanted food items.

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