CatchKeeper
The game fish

Smallmouth Bass

Micropterus dolomieu

Also known as

  • Smallmouth US
  • Bronzeback US
  • Brown Bass US
  • Smallie US
  • Bronze Bass US
  • Brownie US

Identification

A robust torpedo-shaped freshwater gamefish built for quick bursts and manoeuvrability in current. Delivers acrobatic resistance with hard headshakes and sustained surging runs that test light-to-medium tackle. Females grow larger than males.

  • Bronze to golden-brown colouration with darker vertical bars along the flanks
  • Three dark bars radiating across the gill cover from behind the eye
  • Upper jaw ends level with the middle of the eye
  • Red or orange eye — a defining field mark separating it from largemouth

Where it holds

  • Rivers
  • Lakes
  • Rocky Shores

Behaviour

A structure-oriented ambush predator with crayfish as the dominant prey (50-70% of diet), supplemented by baitfish and terrestrial insects. Holds behind boulders, ledges, and current seams, making short explosive strikes and retreating to cover. Peaks at dawn, dusk, and through overcast conditions. Most aggressive 15-24°C (59-75°F) with optimal feeding 18-21°C (64-70°F); lockjaw below 10°C (50°F) and above 27°C (81°F). Spawning males fan gravel nests in 2-4m and guard fry.

Diet: Crayfish, Minnows, Baitfish, Terrestrial Insects, Aquatic Insects

How it's caught

Line Fishing

Spinning

Cast tubes, craw soft-plastics, jerkbaits, and topwater walkers to rocky structure, current seams, and drop-offs. Bounce bottom-contact baits off rocks for reaction strikes; work topwaters at dawn and dusk. 6-10lb fluorocarbon balances feel and abrasion resistance.

Live Lining

Free-line or slip-bobber a live crayfish, nightcrawler, or minnow near rocks, ledges, and current breaks. Crayfish are the standout bait — hook through the tail and let the current sweep it naturally. Produces bigger fish than artificials in pressured water.

Jigging

Vertical-drop hair jigs, tube jigs, or blade baits on deep bluffs, bridge pilings, and offshore rocky points. Lift-drop with controlled pauses; bites come on the fall. Particularly productive in cold water and on pressured smallmouth fisheries.

Fly Fishing

Streamer

Strip crayfish patterns, Clousers, and Woolly Buggers along rocky structure and current seams. Sink-tip line gets flies down fast; erratic strips trigger reaction strikes. The single most productive fly tactic for this species.

Dry Fly

Cast poppers and terrestrial patterns to current seams, eddies, and shoreline structure. Twitch deer-hair bugs on the surface at dawn and dusk. Explosive takes but less consistent than streamers.

Nymphing

Dead-drift stonefly nymphs, hellgrammites, and sculpin patterns along bottom in rocky runs and pools. Use a strike indicator or tight-line rig. Best when bass are holding deep in clear flowing water.

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