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Fundulopanchax sjostedti
	Male in an aquarium
Conservation status
	; Endangered (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cyprinodontiformes
Family:	Nothobranchiidae
Genus:	Fundulopanchax
Species:	F. sjostedti
Binomial name
	Fundulopanchax sjostedti; (Lönnberg, 1895)
Synonyms
	Aphyosemion sjostedti (Lönnberg, 1895); Aphyosemion sjoestedti (Lönnberg, 1895); Fundulopanchax sjoestedti (Lönnberg, 1895); Fundulus gularis caerulea Boulenger, 1915; Aphyosemion caeruleum (Boulenger, 1915); Fundulopanchax caeruleus (Boulenger, 1915); Fundulus caeruleus Boulenger, 1915; Aphyosemion coeruleum (Boulenger, 1915); Fundulus zimmeri Ahl, 1924; Aphyosemion zimmeri (Ahl, 1924); Fundulopanchax zimmeri (Ahl, 1924) ;

Fundulopanchax sjostedti, the blue gularis, golden pheasant gularis or red aphyosemion, is a species of toothcarp endemic to the Niger delta. It is only found in Nigeria and Cameroon.^[1]

Etymology

It is named after the Swedish naturalist Bror Yngve Sjöstedt (1866–1948) who collected the type specimen close to a waterfall by the Ndian River, in the Ndian department in Cameroon's Southwest Region.

Description

This species expresses sexual dimorphism. The males are more colourful and larger than the females, expressing very attractive colours. They outsize all other members of their genus, attaining lengths of 14 centimetres (5.5 in). It's a powerful and predatory species, feeding on invertebrates as well as small fish. However it's not the largest species of killifish; note for example the Gulf killifish (Fundulus grandis) which can reach a maximum length of 18 centimetres (7.1 in).^[2]^[3]

References

^ ^a ^b Olaosebikan, B.D. (2020). "Fundulopanchax sjostedti". IUCN Red List of Threatened Species. 2020: e.T181696A134761017. doi:10.2305/IUCN.UK.2020-2.RLTS.T181696A134761017.en. Retrieved 13 October 2023.
^ Smith, C. Lavett (1997). National Audubon Society Field Guide to Tropical Marine Fishes: Of the Caribbean, the Gulf of Mexico, Florida, the Bahamas, and Bermuda. Alfred A. Knopf, Inc., New York. p. 720. ISBN 978-0-679-44601-9.
^ Froese, Rainer; Pauly, Daniel (eds.). "Fundulus grandis". FishBase. January 2022 version.

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[IUCN-1] Olaosebikan, B.D. (2020). "Fundulopanchax sjostedti". IUCN Red List of Threatened Species. 2020: e.T181696A134761017. doi:10.2305/IUCN.UK.2020-2.RLTS.T181696A134761017.en. Retrieved 13 October 2023.

[Smith-2] Smith, C. Lavett (1997). National Audubon Society Field Guide to Tropical Marine Fishes: Of the Caribbean, the Gulf of Mexico, Florida, the Bahamas, and Bermuda. Alfred A. Knopf, Inc., New York. p. 720. ISBN 978-0-679-44601-9.

[FishBase-3] Froese, Rainer; Pauly, Daniel (eds.). "Fundulus grandis". FishBase. January 2022 version.

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