Clarias werneri  Boulenger, 1906

Werner's catfish
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Clariidae (Airbreathing catfishes)
Etymology: Clarias: Greek, chlaros = lively, in reference to the ability of the fish to live for a long time out of water.   More on author: Boulenger.

Environment / Climate / Range Ecology

Freshwater; demersal.   Tropical; 7°N - 7°S

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 23.0 cm SL male/unsexed; (Ref. 4967)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 64-92; Anal soft rays: 64 - 79; Vertebrae: 58 - 62. Pectoral fin spine serrated on both inner and outer sides (Ref. 34290). Head pointed in dorsal outline; snout short and slightly rounded; eyes more dorsally located. Frontal fontanelle short and squat (`sole-shaped') or intermediate between `sole-shaped' and `knife-shaped'; occipital fontanelle long and oval-shaped. The `dermosphenotic' and supraorbital joined. Tooth plates small. gill rakers long, slender and distantly set. Suprabranchial organ well developed. Openings of secondary canals regularly arranged along flanks.

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

Africa: upper White Nile across Lake Victoria and lakes of Central African rift (Kyoga, Edward) and southwards to Lake Tanganyika and the Malagarasi drainage (Ref. 78218). Reported from Bahr el Jebel in Sudan (Ref. 28714).

Biology     Glossary (e.g. epibenthic)

Found in lakes and rivers. Feeds mainly on insects, consisting of larval and adult aquatic Coleoptera, terrestrial insects, chironomid larvae and larvae of Povilla, culicines and hydroptilids. Also feeds on ostracods, gastropods, plants, copepods and Hydracarina (Ref. 248).

Main reference Upload your references | References | Coordinator | Collaborators

Teugels, G.G., 1986. A systematic revision of the African species of the genus Clarias (Pisces; Clariidae). Ann. Mus. R. Afr. Centr., Sci. Zool., 247:199 p.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

Fisheries:
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00348 - 0.01657), b=3.00 (2.83 - 3.17), based on LWR estimates for this Genus-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.38 se; Based on food items.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (26 of 100) .
Price category (Ref. 80766):   Unknown.