Fishing Ontario Canada


Distribution in the Local Area:

Albion Lake, Aylen Lake, Balfour Lake, Baptiste Lake, Bark Lake, Batelle Lake, Bay Lake, Bell Rapids Lake, Bow Lake, Card Lake, Cardwell Lake, Cashel Lake, Clarke Lake, Derry Lake, Faraday Lake, Galeairy Lake, Gin Lake, Hay Lake, Headstone Lake, Holland Lake, Horse Lake, Jamieson Lake, Kamaniskeg Lake, Lake St. Ola, Lake St. Peter, L'Amable Lake, Lavellee Lake, Limerick Lake, Little Mayo Lake, Long Lake, Lower Hay Lake, Lower Paudash Lake, Mallard Lake, Mayo Lake, McCauley Lake, McKenzie Lake, Mephisto Lake, Mink Lake, Purdy Lake, Rapid Lake, Salmon Trout Lake, Steenburg Lake, Watt Lake, Weslemkoon Lake, Wollaston Lake,


Micropterus, from the Greek, "small fin"
dolomieui, in honor of Dieudonné de Dolomieu, a French mineralogist
Common name from the size of its mouth relative to that of its cousin, the Largemouth Bass. (In and of itself the Smallmouth doesn't have a particularly small mouth.)
Other common names include: Black Bass, Bronzeback, Brown Bass, Browny, Green Bass, Green Trout, Jumper, Mountain Trout, Northern Smallmouth Bass, Oswego Bass, Redeye Bass, River Bass, Smallie, Smallmouth Black Bass, White Trout


Kingdom Animalia
Phylum Chordata, animals with a spinal chord
Subphylum Vertebrata, animals with a backbone
Superclass Osteichthyes, bony fishes
Class Actinopterygii, ray-finned and spiny rayed fishes
Subclass Neopterygii
Infraclass Teleostei
Superorder Acanthopterygii,
Order Perciformes, perch-like fishes
Suborder Percoidei
Family Centrarchidae, sunfish
Genus Micropterus, black basses, largemouth basses


A slender, streamlined perch




1½-5 lbs


brown, golden-brown, through olive to green on back
sides lighter, with faint, evenly spaced, wavy olive blotches
cream to milk-white underside
broad lateral line
5 olive-green bars radiate back from the red eye and 1 radiates forward to the end of the snout.


spiny and soft portions of dorsal fin broadly connected, with only a shallow notch between lobes.
tail fin in young distinctly tri-colored, with a black vertical bar separating the yellowish fin base.


moderately large mouth, where the upper jaw reaches to near the rear margin of the eye in adults


Distinguished from its largemouth cousin by:
its mouth, though hardly small, is no match for the largemouth's; the maxilla extends rearward only about even with the pupil.
notch between the spiny and soft parts of the dorsal less pronounced
irregular vertical bars or a continuous shading of dark brown above to a gray or cream below.


Primarily an inhabitant of swift flowing, less turbid waters in rivers and smaller streams, usually near rocks. (Prefers gravel under 1" in diameter to build nests and spawn). Does well in northern lakes.
Water temperatures must reach the low 60 ºs for spawning, one reason many coldwater streams hold trout rather than bass.
Needs a great amount of dissolved oxygen and, in streams, a dependable streamflow and modest current.
Retreats to pools, undercut banks, or deep water to avoid bright daylight. Most active in early morning and evening. In winter, they gather near bottom and feed little until spring and water temperatures rise to about 47 º F.


Crayfish are favored prey, though they also feed heavily on fish. Crustaceans and larger insects also figure in diet.
Newly hatched young consume copepods and cladocerans but begin to forage on insects when about ½" long. By the time fingerlings are 1½" in length, insects and small fish comprise bulk of diet.


U.S. Record: 11 lbs 15oz, from Dale Hollow Lake, Kentucky, 1955
Minnesota Record: 8 lbs 0oz, from West Battle Lake (Otter Tail County).


Highly regarded as a feisty sport fish. It is usually associated with a rocky stream or lake environment where its favorite food, crayfish, is abundant.


Spawns in spring, in gravelly shallows of lakes or large, gentle eddies in streams, when water temperatures reach 62º-64º F.
Male assembles a saucer-shaped nest, 14"-25" in diameter, on the gravel, coarse sand or rock bottom by sweeping its tail over the substrate. The female lays 2,000 to 10,000 eggs and then heads for deep water.
Male protects the nest from predators of his own and other species and fans the eggs free of silt until the sac fry emerge in 3-5 days, depending on water temperature. Re-nesting is quite common, particularly when early nests are destroyed by flood or similar natural disaster.
Newly hatched sac fry swim over the nest in a school for about 6-15 days, moving sluggishly until all the nourishment in the yolk sac is consumed. The young fry are about one-half inch long when the yolk sac is absorbed, and they leave the nest to feed on small crustaceans and copepods.
As with the Largemouth, there is no relationship between the number of spawning fish and the success of the spawn. The strength of the year class depends solely on water conditions - in particular, the absence of a sudden cold snap or muddy floodwaters that can kill eggs and fry.
Sexually mature in the second or third year, but where food is scarce or water relatively cool in all seasons, may not occur until third or fourth year.