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Micralestes humilis Boulenger, 1899

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Micralestes humilis
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Congo (Brazzaville) country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from the Kouyou River (Likouala tributary, middle Congo River basin)(Ref. 44840).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/cf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Daget, J. and A. Stauch, 1963
National Database:

Common names from other countries

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Characiformes (Characins) > Alestidae (African tetras)
Etymology: Micralestes: Greek, mikros = small + Greek,lestes = thief (Ref. 45335).
  More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce pelágico(a,os,as); pH range: 6.5 - 7.5; dH range: 10 - 25.   Tropical; 23°C - 27°C (Ref. 2060)

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Africa: widely distributed in the Congo basin (Ref. 42032). Also found in the Bénoué, Chad (Ref. 81279), Cross (Ref. 80290, 81279) and the Zambezi River (Ref. 5331, 80290). Report from Lake Tanganyika (Ref. 80290) needs confirmation; in the Lukuga River only known downstream of Niemba (Ref. 36901, 42032). Report from the Cubango/Okavango in Angola (Ref. 5331) unconfirmed (Ref. 120641).

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 10.6 cm TL macho/indeterminado; (Ref. 2880)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 0; Raios dorsais (total) : 10; Espinhos anais: 0; Raios anais : 17 - 22. Diagnosis: lateral line always complete, 24-27 (Ref. 80290) or 27-30 (Ref. 81279) lateral line scales. Anal fin with 3 unbranched and 15-18 (Ref. 80290) or 14-19 (Ref. 81279) branched rays. 10-15 (Ref. 80290) or 10-14 (Ref. 81279) gill rakers on lower part of first branchial arch. 6/8 premaxillary teeth; fins colorless or, at most, pinkish; tip of dorsal fin hyaline (Ref. 2880, 81279), no black apical tip (Ref. 80290). Scales of flank with melanophores concentrated on basal margin (Ref. 80290).

Biologia     Glossário (p.ex. epibenthic)

Affinities: M. humilis is most similar and possibly conspecific with M. stormsi Boulenger, 1902, and M. sardina Poll, 1938; apart from coloration, it is distinguished from latter two species on the basis of slight differences in overlapping features (see Ref. 80290).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Paugy, D. and S.A. Schaefer, 2007. Alestidae. p. 347-411. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) Poissons d'eaux douces et saumâtres de basse Guinée, ouest de l'Afrique centrale/The fresh and brackish water fishes of Lower Guinea, west-central Africa. Vol. 1. Coll. Faune et Flore tropicales 42. Istitut de recherche pour le développement, Paris, France, Muséum nationale d'histoire naturelle, Paris, France and Musée royale de l'Afrique centrale, Tervuren, Belgique. 800 p. (Ref. 80290)

Status na Lista Vermelha da UICN (Ref. 130435)

  Segura ou pouco preocupante (LC) ; Date assessed: 13 August 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless




Uso pelos humanos

Pescarias: ; Aquário: Espécies comerciais
FAO(Publication : search) | FishSource |

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Estimates based on models

Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00528 - 0.02495), b=3.00 (2.82 - 3.18), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref. 120179):  Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Categoria de preço (Ref. 80766):   Unknown.