Namibia country information

Common names: Cave catfish
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known only from one dark, underground lake in Aigamas Cave near Otavi. This is severely threatened by the depletion of water levels in local Karstland aquifers, which has caused lake levels in Aigamas Cave to decrease by about 20 m since 1921. Fishing pressure by aquarists could further threaten this species. Conservation action includes prohibiting the translocation of alien fishes and the pollution of cave lakes; and access to the cave or collection of specimens should have permit from the owner of Aigamas farm (Ref. 26175). Also Ref. 248, 13332, 27553. Also known from Interior (Ref. 33857). Status of theat: Critically endangered listed in IUCN 1994 (Ref. 52863). Threatened (Ref. 54854).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/wa.html
National Fisheries Authority: http://www.benefit.org.na/
Occurrences: Occurrences Point map
Main Ref: Skelton, P.H., 1993
National Database:

Common names from other countries

穴胡鲶, Spelonkbaber, Luolakonnamonni, ... more

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > 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: Trewavas.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce demersal. Tropical; 20°C - 26°C (Ref. 2060); 18°S - 20°S

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Africa: known only from the type locality, Aigumas Cave, North Otavi, Namibia. Major threat is depletion of ground water (Ref. 7248).

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 16.1 cm SL macho/indeterminado; (Ref. 7248)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

Espinhos dorsais (total) : 0; Raios dorsais (total) : 71 - 76; Raios anais : 66 - 61. Devoid of pigment. Eyes extremely small; covered with skin; dorsally located. Head rectangular in dorsal outline; snout broadly rounded. Frontal fontanelle long and narrow; occipital fontanelle long and oval-shaped. Supraorbital and `dermosphenotic' bones fused. Premaxillary tooth plate rather broad. gill rakers long, slender and distantly set. Suprabranchial organ greatly reduced. Openings of the secondary sensory canals regularly arranged along flanks.

Facultative air-breathing (Ref. 126274); Lacks pigment. Lives in caves (Ref. 248) and is adapted to life underground (Ref. 78218); over shelves in open, clear water. Feeds on bat droppings, animal carcasses and terrestrial insects that fall into the lake (Ref. 7248).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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. (Ref. 248)

Status na Lista Vermelha da UICN (Ref. 130435)

Criticamente em perigo (CR) (B1ab(iii)+2ab(iii)); Date assessed: 01 March 2007

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

Harmless

Uso pelos humanos

Pescarias: sem interesse; Aquário: Espécies comerciais

FAO(Publication : search) | FishSource |

Mais informação

Trophic ecology
Itens alimentares
Diet compositions
Food consumptions
Food rations
Predadores

Ecology
Ecologia
Home ranges

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Frequências de comprimento
Mass conversions
Recruitments
Abundances

Life cycle
Reprodução
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larvas
Dinâmica larval

Distribution
Países
Áreas da FAO
Ecossistemas
Ocorrências
Introduções
BRUVS - Videos

Anatomy
Gill areas
Cérebros
Otólitos

Physiology
Body compositions
Nutrients
Oxygen consumptions
Tipo de natação
Swimming speeds
Visual pigment(s)
Sons de peixes
Diseases / Parasites
Toxicities (LC50s)

Genetics
Genética
Electrophoreses
Heritabilities

Human related
Aquaculture systems
Perfis para aquacultura
Estirpes
Ciguatera cases
Stamps, coins, misc.

Outreach
Colaboradores

Taxonomy
Nomes comuns
Sinônimos
Morfologia
Morfometria
Fotos

References
Referências

Ferramentas

Relatórios especiais

Checar Manutenção em Aquário | Checar Planilhas de Fatos sobre as Espécies | Checar Planilhas de Fatos sobre Aquicultura

Baixar XML

Página de sumário | Dado pontual | Nomes comuns | Fotos

Fontes da internet

Estimates based on models

Índice de diversidade filogenética (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00776 (0.00343 - 0.01757), b=2.97 (2.79 - 3.15), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Nível Trófico (Ref. 69278): 2.8 ±0.26 se; based on food items.

Resiliência (Ref. 120179): médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Assuming tm=1; Fec=50).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Clarias cavernicola Trewavas, 1936