Overview

Comprehensive Description

Biology

Oviparous (Ref. 205).
  • Gosse, J.-P. 1986 Mochokidae. p. 105-152. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels, MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3202)
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General Description

From Boulenger 1909, pp. 400-401.

Depth of body equal to or a little greater than length of head, 3 2/3 to 4 1/3 times in total length. Head as long as broad or slightly longer than broad, feebly rugose above from between the eyes; snout obtusely pointed, 1 ¼ to 1 1/3 times length of postopercular part of head; eye supero-lateral, 5 1/2 to 7 1/2 times in length of head, 2 to 3 times in interorbital width; lips moderately developed; premaxillary teeth forming a broad and rather short band; movable mandibular teeth nearly ½ diameter of eye, 36 to 50 in number. Maxillary barbel not distinctly margined, 1 to 1½ times length of head, reaching anterior third or middle of pectoral spine; outer mandibular barbels twice as long as inner, with long slender branches, inner with shorter branches bearing tubercular ramifications. Gill opening not extending downwards beyond root of pectoral spine. Occipito-nuchal shield obtusely tectiform, rough like the occiput, 1 1/3 to 1 1/2 times as long as broad, with truncate or pointed posterior processes. Humeral process 2 ½ to 3 times as long as broad, extending as far back as occipito-nuchal shield, armed in the adult with several strong spines directed backwards; these spines reduced to 2 or 3 in the young. Skin villose on the sides. Dorsal I 6-7; spine as long as or a little shorter than head, striated, smooth in front, very feebly serrated behind. Adipose dorsal 5 to 7 times as long as deep, 3 to 5 times as long as its distance from rayed dorsal. Anal IV 8-10, rounded or obtusely pointed in front. Pectoral spine a little longer than head, strongly serrated on both sides. Ventral reaching anal or not. Caudal deeply forked, upper lobe the longer. Caudal peduncle as long as deep. Greyish or brownish above, uniform or with small round blackish spots, yellowish white beneath.

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Distribution

Range Description

Synodontis acanthomias is known from the Lower, Central and This species is known from upper Congo River basin (except in central forest) and in Pool Malebo (Stanley Pool). It is not known from the Mweru-Luapula-Bangweulu system.
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Africa: throughout the Congo River basin except in central forest (Ref. 82238), in Cameroon, Democratic Republic of the Congo and Central African Republic.
  • Gosse, J.-P. 1986 Mochokidae. p. 105-152. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels, MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3202)
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widespread in Congo Basin

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Congo River basin, central Africa.
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Physical Description

Size

Maximum size: 590 mm TL
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Max. size

59.0 cm TL (male/unsexed; (Ref. 3202))
  • Gosse, J.-P. 1986 Mochokidae. p. 105-152. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels, MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3202)
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to 400 mm SL

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Synodontis acanthomias is a benthopelagic species. It is oviparous with distinct pairing during breeding (Breder and Rosen 1966).

Systems
  • Freshwater
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Environment

benthopelagic; freshwater; pH range: 6.5 - 8.0; dH range: 25
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Life History and Behavior

Life Cycle

Oviparous (Ref. 205). Distinct pairing during breeding (Ref. 205).
  • Breder, C.M. and D.E. Rosen 1966 Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p. (Ref. 205)
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Moelants, T.

Reviewer/s
Brummett, R., Mbe Tawe, A.N., Dening Touokong, C., Reid, G.M., Snoeks, J. Staissny, M., Moelants, T., Mamonekene, V., Ndodet, B., Ifuta, S.N.B., Chilala, A., Monsembula, R., Ibala Zamba, A., Opoye Itoua, O., Pouomogne, V., Darwall, W. & Smith, K.

Contributor/s

Justification
The species is widespread or without major threats throughout the Central Africa assessment region and is assessed as Least Concern.
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Population

Population
No information available.

Population Trend
Unknown
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Threats

Major Threats
None known.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
None known.
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Wikipedia

Synodontis acanthomias

Synodontis acanthomias is a species of upside-down catfish native to the Congo Basin of Cameroon, the Central African Republic, the Democratic Republic of the Congo and the Republic of the Congo. This species grows to a length of 59 centimetres (23 in) TL.

References[edit]

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