Heterandria formosa Girard, 1859

Least killifish

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

Classification	Actinopterygii \| Cyprinodontiformes \| Poeciliidae \| Poeciliinae
Synonyms	... more
Common names	Geterandiya, Drobniczka jedniodniówka, 美丽异小鮰, ... more

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Image of Heterandria formosa (Least killifish)

Picture by Ott, G.

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Main reference

Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 3.6 cm TL male/unsexed; (Ref. 5723); common length : 2.1 cm TL male/unsexed; (Ref. 12193)

Length at first maturity

, range 0.80000001192093 - 1.3999999761581 cm

Environment

Benthopelagic; non-migratory; freshwater; brackish; pH range: 7.0 - 8.0; dH range: 9 - 19

Climate / Range

Tropical; 20°C - 26°C (Ref. 1672); 35°N - 25°N

North America: occurs only in the USA from Cape Fear River drainage in North Carolina to southern Louisiana.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Inhabits heavily vegetated standing to slow-flowing fresh and brackish water. Feeds on worms, crustaceans and plant matter (Ref. 7020). A truly viviparous fish (Ref. 45952).


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

Human uses
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 Abundance	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 \| Length-frequency wizard \| Life-history tool \| LifeMapper \| Point map

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Internet sources

Estimation of some characteristics with mathematical models

Phylogenetic diversity index (Ref. 82805)

PD₅₀ = 0.5010

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (tm = 0.13; tmax = 0.33; Batch Fec = 1-7;)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (12 of 100)	Not marketed/unknown

Entered by Froese, Rainer

Modified by Luna, Susan M.

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