Overview

Comprehensive Description

Biology

Found in the rapids of the Luachimo River (Ref. 92838).
  • Vari, R.P., C.J. Ferraris Jr. and P.H. Skelton 2012 New species of Congoglanis (Siluriformes: Amphiliidae) from the southern Congo River basin. Copeia 2012(4):626-630. (Ref. 92838)
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Distribution

Africa: Luachimo rapids of the Kasai River system, Congo River basin in Angola (Ref. 92838).
  • Vari, R.P., C.J. Ferraris Jr. and P.H. Skelton 2012 New species of Congoglanis (Siluriformes: Amphiliidae) from the southern Congo River basin. Copeia 2012(4):626-630. (Ref. 92838)
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Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 8; Analspines: 0; Analsoft rays: 8 - 10; Vertebrae: 38 - 39
  • Vari, R.P., C.J. Ferraris Jr. and P.H. Skelton 2012 New species of Congoglanis (Siluriformes: Amphiliidae) from the southern Congo River basin. Copeia 2012(4):626-630. (Ref. 92838)
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Size

Max. size

11.3 cm SL (male/unsexed; (Ref. 92838))
  • Vari, R.P., C.J. Ferraris Jr. and P.H. Skelton 2012 New species of Congoglanis (Siluriformes: Amphiliidae) from the southern Congo River basin. Copeia 2012(4):626-630. (Ref. 92838)
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Diagnostic Description

Congoglanis howesi differs from C. alula in the caudal-peduncle length relative to the caudal-peduncle depth (360%-380% vs. 260%-330%), the head depth (46-57% of head length vs. 38-45%), and the more attenuate head (Ref. 92838). It differs from C. inga in the length of the maxillary barbel, which is extending beyond posterior nostril but falling distinctly short of vertical through anterior margin of orbit vs. extending well beyond anterior margin of orbit, the body width at the dorsal-fin origin (14-16% of standard length vs. 17-20%), the postorbital length (29-32% of head length vs. 32-35%), the caudal peduncle length relative to the caudal-peduncle depth (360-380% vs. 210-290%), the number of vertebrae (38-39 vs. 35-37), and the length of the caudal peduncle, being 20-24% of standard length vs. 16-21% (Ref. 92838). It differs from C. sagitta in the length of the pelvic fin (22-28% of standard length vs. 19-21%), the head width (75-78% of head length vs. 63-73%), the length of the adpressed anal fin, reaching beyond the vertical through the posterior terminus of the adipose fin vs. reaching to or falling short of that vertical, and the length of the pectoral fin, being 26-32% of standard length vs. 23-27% (Ref. 92838).
  • Vari, R.P., C.J. Ferraris Jr. and P.H. Skelton 2012 New species of Congoglanis (Siluriformes: Amphiliidae) from the southern Congo River basin. Copeia 2012(4):626-630. (Ref. 92838)
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Type Information

Paratype for Congoglanis howesi Vari et al.
Catalog Number: USNM 405307
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): A. de Barros Machado & E. de Carvalho
Year Collected: 1957
Locality: Angola, Lunda Norte, Kasai River basin, Luachimo River, rapides de Luachimo, in residual pools downstream of dam, Angola, Africa
  • Paratype: Vari, R. P., et al. 2012. Copeia. 2012 (4): 626, Figs. 1, 2.
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Ecology

Habitat

Environment

demersal; freshwater
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Trophic Strategy

Collected in the rapids of the Luachimo River (Ref. 92838).
  • Vari, R.P., C.J. Ferraris Jr. and P.H. Skelton 2012 New species of Congoglanis (Siluriformes: Amphiliidae) from the southern Congo River basin. Copeia 2012(4):626-630. (Ref. 92838)
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries:
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