Aplocheilichthys johnstoni (Günther, 1894)

Johnston's topminnow

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Cyprinodontiformes \| Poeciliidae \| Aplocheilichthyinae
Synonyms	Haplochilus johnstoni, Aplocheilus johnstoni, Haplochilichthys johnstoni, ... more
Common names	Johnston's lampeye, Killifish, Topminnow, ... more

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Image of Aplocheilichthys johnstoni (Johnston

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Main reference

Wildekamp, R.H., R. Romand and J.J. Scheel. 1986. (Ref. 3788)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 8.5 cm TL male/unsexed; (Ref. 31267); common length : 4.5 cm TL male/unsexed; (Ref. 27139)

Environment

Benthopelagic; non-migratory; freshwater; pH range: 6.5 - 7.2

Climate / Range

Tropical; 18°C - 26°C (Ref. 2060); 10°S - 28°S

Africa: widely distributed in southern Africa; present in various lakes and river drainages in Malawi, Tanzania, Mozambique, Zambia, Angola, Namibia, Botswana, Zimbabwe, South Africa and the Democratic Republic of the Congo (Ref. 47311).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Found near the surface and among weeds in which it seeks refuge and food (Ref. 5595). Prefers standing or gently flowing water as in river backwaters, floodplains (Ref. 7248), swamps (Ref. 7248, 47311), creeks and pools (Ref. 47311). Usually found in small schools among fringing vegetation; usually abundant when present (Ref. 47311). Feeds on small invertebrates like mosquito larvae and daphnia. A serial spawner, lays eggs which attach to vegetation. When food is abundant, breeding occurs daily over an extended period (year-round where conditions are suitable) (Ref. 7248). 6 cm max TL (Ref. 3788). Not a seasonal killifish. Is difficult to maintain in aquarium (Ref. 27139).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Fisheries: minor commercial; aquarium: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
Biogeographic modelling \| Bio-Quiz \| E-book \| Field guide \| Identification keys \| Length-frequency wizard \| Life-history tool \| LifeMapper \| Point map

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

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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (24 of 100)	Not marketed/unknown

Entered by Luna, Susan M.

Modified by Bailly, Nicolas

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