Overview

Comprehensive Description

Biology

No specific habitat information was associated with the types, all of which were collected in the rapids of the Luachimo River (Ref. 92838).
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Distribution

Africa: Luachimo rapids of the Kasai River system, Congo River basin (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
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Size

Max. size

11.3 cm SL (male/unsexed; (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).
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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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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries:
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Disclaimer

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