Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Centrarchidae
Etymology: Micropterus: Greek, mikros = small + Greek,pteron = wing, fin (Ref. 45335); dolomieu: Named after M. Dolomieu, French minerologist and friend of Lacepède (Ref. 1998). More on author: Lacepède.
Environment / Climate / Range
Freshwater; benthopelagic. Temperate; 10°C - 30°C (Ref. 12741), preferred ?; 47°N - 34°N
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 22 - ? cm
Max length : 69.0 cm TL male/unsexed; (Ref. 5723); common length : 8.0 cm TL male/unsexed; (Ref. 3549); max. published weight: 5.4 kg (Ref. 4699); max. reported age: 26 years (Ref. 46974)
North America: St. Lawrence-Great Lakes system, Hudson Bay and Mississippi River basins from southern Quebec in Canada to North Dakota and south to northern Alabama and eastern Oklahoma in the USA. Introduced into many countries for sport fishing. Several countries report adverse ecological impact after introduction.
Adults inhabit shallow rocky areas of lakes, clear and gravel-bottom runs and flowing pools of rivers, cool flowing streams and reservoirs fed by such streams (Ref. 1998). Young feed on plankton and immature aquatic insects while adults take in crayfish, fishes, and aquatic and terrestrial insects (Refs. 1998, 10294, 44091). Are sometimes cannibalistic (Ref. 30578). Preyed upon by fishes and turtles (Ref. 1998). Excellent food fish (Ref. 1998).
The male builds the nest in shallow waters of lakes and rivers, on sand, gravel, or rocky bottoms. Nest building usually occurs within 150 yards of where his nest was built in previous years. The pair swims about the nest, rubbing and nipping each other and eventually come to rest on the bottom. Actual spawning occurs and lasts for 5 seconds. The pair then encircles the nest for about 25-45 seconds, before settling to spawn again. This goes on for 2 hours. After spawning, the female leaves the nest and may spawn with another male in another nest. Males guard the eggs and young. (Ref. 1998).
Scott, W.B. and E.J. Crossman, 1973. Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184:1-966. (Ref. 1998)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: commercial; gamefish: yes; aquarium: public aquariums
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00887 - 0.01355), b=3.05 (2.99 - 3.11), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 3.6 ±0.2 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.10-0.28; tm=3-6; tmax=14; Fec=5,000).
Prior r = 0.42, 2 SD range = 0.24 - 0.75, log(r) = -0.87, SD log(r) = 0.29, Based on: 1 M, 18 K, 4 tgen, 3 tmax, 2 Fec records
Vulnerability (Ref. 59153
): Moderate to high vulnerability (50 of 100) .