Overview

Comprehensive Description

Carlarius heudelotii (Valenciennes, 1840)

(fig. 29)

Arius heudelotii ZBK Valenciennes in Cuvier & Valenciennes, 1840b: 73, pl. 428. Type locality: Senegal . Syntypes : MNHN B-0689 .

Arius mercatoris ZBK Poll, 1949: 201, fig. 8. Type locality: Atlantic , 12º34’N , 17º09’W , 8-10 fm. Holotype : IRSNB 89 .

Distribution: Niger River

Countries: Senegal, Guinea Bissau and Nigeria.

Habitat: Freshwaters.

Maximum size: 760 mm TL.

Material examined: USNM 293075 (3 al, 340-395 mm TL) (1 c&s), Guinea Bissau , 11° 38’ N - 17° 00’ W .

  • Alexandre P. Marceniuk, Naércio A. Menezes (2007): Systematics of the family Ariidae (Ostariophysi, Siluriformes), with a redefinition of the genera. Zootaxa 1416, 1-126: 37-37, URL:http://www.zoobank.org/urn:lsid:zoobank.org:pub:FFC65592-D8DB-41BE-AEAC-A41EAB6C6185
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Biology

Enters brackish waters; found along the shallow continental shelf (Ref. 3876). Feeds on benthic invertebrates buried in the mud but it can sometimes leave the bottom to capture prey in open water. The females bear large eggs which are incubated and develop in the buccal cavity of the males. The rays of the fins are venomous and the wound inflicted is extremely painful (Ref. 5377). Minimum depth from Ref. 58018.
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Distribution

Eastern Atlantic: Cape Blanc, Mauritania to Gabon and possibly Angola along the shallow continental shelf. Reported from the lower Niger basin, the Benoué River (Ref. 13331), and the Gambia (Ref. 28587).
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West-central Africa, Niger River: Guinea Bissau, Nigeria and Senegal, Angola (?).
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Physical Description

Size

Maximum size: 760 mm TL
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Max. size

83.0 cm TL (male/unsexed; (Ref. 40637)); max. published weight: 8,500 g (Ref. 40637)
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Ecology

Habitat

Environment

demersal; brackish; marine; depth range 15 - 75 m (Ref. 6541)
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Depth range based on 4 specimens in 1 taxon.
Water temperature and chemistry ranges based on 3 samples.

Environmental ranges
  Depth range (m): 12 - 30
  Temperature range (°C): 22.660 - 25.317
  Nitrate (umol/L): 1.765 - 6.604
  Salinity (PPS): 35.094 - 35.473
  Oxygen (ml/l): 3.515 - 4.574
  Phosphate (umol/l): 0.319 - 0.648
  Silicate (umol/l): 3.028 - 4.769

Graphical representation

Depth range (m): 12 - 30

Temperature range (°C): 22.660 - 25.317

Nitrate (umol/L): 1.765 - 6.604

Salinity (PPS): 35.094 - 35.473

Oxygen (ml/l): 3.515 - 4.574

Phosphate (umol/l): 0.319 - 0.648

Silicate (umol/l): 3.028 - 4.769
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 40 - 75m.
From 40 to 75 meters.

Habitat: demersal. Enters brackish waters; found along the shallow continental shelf (Ref. 3876).
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Trophic Strategy

Feeds on fish and benthic invertebrates (Ref. 28587).
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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial
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Wikipedia

Carlarius heudelotii

Carlarius heudelotii is also known as the Smoothmouth sea catfish.

Location[edit]

It is a species of sea catfish that occurs along the western coast of Africa from Mauritania to Gabon or Angola. While mostly a marine species occurring on the continental shelf, it has also been reported from the Niger basin and the Benoué and Gambia Rivers.

Biology[edit]

The Smoothmouth sea catfish stays buried in the mud and feeds on invertebrates and occasionally leaves the bottom to feed on open prey. These fish have rays on their fins which are known to be very venomous and painful if a wound is inflicted. The female in this species bear large eggs.[1]

Size[edit]

The maximum published weight of the Smoothmouth sea catfish is 8,500 g.[1]

References[edit]

  1. ^ a b "Carlarius heudelotii Details Smooth-mouth Sea Catfish". Encyclopedia of Life. Retrieved 22 December 2012. 


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