Arnoldichthys spilopterus (Boulenger, 1909)

Niger tetra

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

Classification	Actinopterygii \| Characiformes \| Alestidae
Synonyms	Petersius spilopterus, ... more
Common names	Arnolds tetra, 点鳍红眼脂鲤, Swiecik wielkoluski, ... more

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Main reference

Paugy, D. 1990. (Ref. 2880)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 9.6 cm SL male/unsexed; (Ref. 2880)

Environment

Pelagic; freshwater; pH range: 6.0 - 8.0; dH range: 5 - 19

Climate / Range

Tropical; 23°C - 28°C (Ref. 1672)

Africa: lower Niger and Ogun rivers in Nigeria.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Anal spines: 3; Anal soft rays: 11. Parietal fontanel absent. Sexual dimorphism on anal fin: females - hyaline with black spot on rays beneath adipose fin, males - lemon yellow (sometimes red-yellow) with 5 dark or black bands and colored margin. Two lateral bands, upper red-orange, lower blue-green. Upper part of eye red. Dorsal with black spot lined with a clear zone which occupies 2/3 of the anterior portion of the dorsal. Scales below lateral big. Caudal stripe extending in middle of caudal fin from base to fork.

Feeds on worms, insects and crustaceans. In aquaria, female lays up to 1000 eggs, after vigorous driving by the male, which hatch in 30 to 34 hours (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 100 cm (Ref. 51150).


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	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

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

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Medium, minimum population doubling time 1.4 - 4.4 years (Fec=1000)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (10 of 100)	Not marketed/unknown

Entered by Cruz, Tess

Modified by Casal, Christine Marie V.

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Page last modified by : elaxamana, 15 July 2009

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