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Arnoldichthys spilopterus in Nigeria
Niger tetra

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Arnoldichthys spilopterus   (Boulenger, 1909)
Family:	Alestidae (African tetras)			picture (Arspi_ua.jpg) by Hippocampus-Bildarchiv
Order:	Characiformes  (characins)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Niger tetra
Max. size:	9.6 cm SL (male/unsexed; Ref. 2880)
Environment:	pelagic; pH range: 6 - 8; dH range: 5 - 19
Climate:	tropical; 23 - 28°C
Global Importance:	aquarium: commercial
Resilience:	Medium, minimum population doubling time 1.4 - 4.4 years (Fec=1000)
Distribution:	Africa: lower Niger and Ogun rivers in Nigeria.
Diagnosis:	Anal spines: 3-3; Anal soft rays: 11-11. 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.
Biology:	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)
Threatened:	Not Evaluated, see IUCN Red List  , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Paugy, D.. 1990. (Ref. 2880)
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Nigeria country information
Common names:	[ No common name ]		Ref:
Status:	native		Ref:  Olaosebikan, B.D. and A. Raji, 1998
Salinity:	freshwater
Uses:	no uses
Comments:	Recorded from the lower Niger and Ogun rivers. Also Ref. 31256.
Country Information:	www.cia.gov/cia/publications/factbook/geos/ni.html
Occurrences:	Occurrences    Point map
Main Ref:	Paugy, D., 1990
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More information:	Countries FAO areas Occurrences Introductions Ecosystem Ecology Diet Food items Food consumption Ration Predators Ciguatera Fish loss Common names Synonyms Pictures Sounds Reproduction Maturity Spawning Eggs Egg dev. Larvae Larval dynamics References Growth L-W relationship L-L relationship Length frequencies Recruitment Max. age & size Metabolism Morphology Morphometrics Gill area Brains Vision Collaborators Genetics Allele frequencies Heritability Strains Aquaculture Aquaculture profile Diseases Ecotoxicology Processing Speed Swim. type Stamps
	Note: No data are available if label is black .
Tools:	Biogeographic modelling | Bio-Quiz | E-book | Field guide | Identification keys | Length-frequency Wizard | Life-history tool | Point map |
Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | GenBank ( genome, nucleotide ) | PubMed | Scirus | Public aquariums | Tree of Life | Zoological Record Other web sites |
	Note: use the Back button of your browser to return to FishBase.
	Modified:  Sanciangco, Millicent	Entered:  Palomares, Maria Lourdes D.

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07