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Micropterus salmoides  (Lacepède, 1802)

Largemouth black bass
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Micropterus salmoides   AquaMaps   Data sources: GBIF OBIS
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Image of Micropterus salmoides (Largemouth black bass)
Micropterus salmoides
Picture by Scarola, J.F.

Kenya country information

Common names: [No common name]
Occurrence: introduced
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Introduced in various natural and artificial still waters and dams (Ref. 52331), including Lake Naivasha (Ref. 1739, 13053, 52331, 52871). It is probably also established in affluent rivers of Lake Victoria (Ref. 52331). It did probably not establish in the Tana River (Ref. 52331).
National Checklist:
Country Information:
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Seegers, L., L. De Vos and D.O. Okeyo, 2003
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Centrarchidae (Sunfishes)
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Main reference

Size / Weight / Age

Max length : 97.0 cm TL male/unsexed; (Ref. 5723); common length : 40.0 cm TL male/unsexed; (Ref. 556); max. published weight: 10.1 kg (Ref. 4699); max. reported age: 23 years (Ref. 46974)


Freshwater; benthopelagic; pH range: 7.0 - 7.5; dH range: 10 - ?; depth range ? - 7 m (Ref. 1998)

Climate / Range

Subtropical; 10°C - 32°C (Ref. 12741); 47°N - 26°N


North America: St. Lawrence - Great Lakes, Hudson Bay (Red River), and Mississippi River basins; Atlantic drainages from North Carolina to Florida and to northern Mexico. The species has been introduced widely as a game fish and is now cosmopolitan. Several countries report adverse ecological impact after introduction.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 10; Dorsal soft rays (total): 11-14; Anal spines: 3; Anal soft rays: 10 - 12; Vertebrae: 30 - 32. Mouth large; maxillary extending beyond the eye. Pelvic fins not joined by a membrane. Green to olive dorsally, milk-white to yellow ventrally, with a black band running from the operculum to the base of the caudal fin. Caudal fin rounded. Caudal fin with 17 rays (Ref. 2196).

Biology     Glossary (e.g. epibenthic)

Adults inhabit clear, vegetated lakes, ponds, swamps, and backwaters and pools of creeks and rivers (Ref. 5723). Usually found over mud or sand and common in impoundments (Ref. 5723). They prefer quiet, clear water and over-grown banks. Adults feed on fishes, crayfish and frogs; young feed on crustaceans, insects and small fishes. Sometimes cannibalistic. They don't feed during spawning; as well as when the water temperature is below 5°C and above 37°C (Ref. 30578). An introduced species in Europe reported to avoid fast-flowing waters and to occur in estuaries with a salinity up to 13 ppt (Ref. 59043). Popular game fish in North America. Preyed upon by herons, bitterns, and kingfishers (Ref. 1998). Excellent food fish (Ref. 1998).

IUCN Red List Status (Ref. 90363)

Threat to humans

  Potential pest

Human uses

Fisheries: minor commercial; aquaculture: commercial; gamefish: yes; aquarium: public aquariums


Special reports

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Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5001 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.8   ±0.4 se; Based on diet studies.

Resilience (Ref. 69278)
Low, minimum population doubling time 4.5 - 14 years (K=0.06-0.14; tm=3-5; tmax=11; Fec=2,000)

Vulnerability (Ref. 59153)
Moderate to high vulnerability (45 of 100)
Price category (Ref. 80766)