Nigeria country information

Common names: Ijakere, Saganci, Usawu
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Widely distributed in Nigeria (Ref. 31256). Known from Ogun River (Ref. 2914), Oshun River (Ref. 81278, 88135), Niger River basin (Ref. 2914, 81278, 88135), including Benue River (Ref. 2914, 81278, 88135) and Lake Kainji (Ref. 3799, 13861), and Cross River (Ref. 2914, 52861, 81278, 88135).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/ni.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Decru, E., E. Vreven and J. Snoeks, 2012
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Hepsetidae (African pikes)
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

African pike, Basoaka, Kurmisia, ... more

Main reference

Decru, E., E. Vreven and J. Snoeks. 2012. (Ref. 88135)
References | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 44.2 cm SL male/unsexed; (Ref. 83624)

Length at first maturity
L_m 14.0 range ? - ? cm

Environment

Freshwater; demersal; pH range: 6.0 - 7.5; dH range: ? - 18; potamodromous (Ref. 51243)

Climate / Range

Tropical; 26°C - 28°C (Ref. 2060), preferred ?

Distribution

Africa: easternmost part of West Africa, from the Sassandra River, Ivory Coast, in the west to the Shari River, Central African Republic, in the east; and southwards up to the Kribi River in Cameroon (Ref. 88135). Reports from outside this area refer to other species of Hepsetus (Ref. 88135, 93279, 93907, 108775).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 9; Anal spines: 0; Anal soft rays: 12; Vertebrae: 45 - 49. Diagnosis: This species is distinguished from all other Hepsetus species by the following unique combination of characters: number of lateral line scales low, 43–51; nostril-lower jaw distance short, 36.6–42.1% of head length; number of gill rakers high, 17–23; number of scales between dorsal fin and lateral line 7.5-9.5; number of scales between adipose fin and lateral line 4.5-6.5; head width broad, 32.8–42.3% of head length; and internasal distance high, 21.9–28.3% of head length (Ref. 88135).

This species seems to prefer upper river courses or small rivers where Hydrocynus species are absent or scarce (Ref. 81278).

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

Threat to humans

Harmless

Human uses

Fisheries: subsistence fisheries; aquarium: commercial

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.1 ±0.71 se; Based on food items.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.27-0.59; tmax=5; Fec < 10,000)

Vulnerability (Ref. 59153)
Low vulnerability (21 of 100)

Price category (Ref. 80766)
Unknown

Hepsetus odoe (Bloch, 1794)