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Astatotilapia tweddlei Jackson, 1985

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Astatotilapia tweddlei
Male picture by Turner, G.F.

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Astatotilapia: Greek, astato = unstable + Bechuana, African native thiape = fish (Ref. 45335);  tweddlei: Named for Mr. Denis Tweddle, Malawi Fisheries Research Unit, in recognition of his valuable contributions to the zoogeography of Malawi as well as his appreciation of the fact that the Lake Chilwa-Chiuta fauna contained a new haplochromine species (Ref. 49182).

Issue
This species is placed in the genus Haplochromis Hilgendorf, 1888 in Eschmeyer (CofF ver. Mar. 2011: Ref. 86697). We keep the lacustrine and riverine "Haplochromine" species in the genus Haplochromis only for the Lake Victoria catchment following Van Oijen et al. (1996: Ref. 12750), until a new complete taxonomic revision is published.

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

; sötvatten bentopelagisk. Tropical; 14°S - 16°S

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Africa: Lakes Chilwa and Chiuta and in flowing rivers (Ref. 4983, 49182).

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 9.0 cm SL hane/ej könsbestämd; (Ref. 49182)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 14 - 16; Mjukstrålar i ryggfenan (totalt) : 9 - 10; Taggstrålar i analfenan: 3; Mjukstrålar i analfenan: 8 - 10; Ryggkotor: 28 - 30. Diagnosis: A species of Astatotilapia with a relatively slender body, its depth 32-37% of standard length; snout pointed; mouth large, oblique, lower jaw 37-45% of head length; caudal fin well rounded, slender, maximum width when extended 75-80% of its length; caudal peduncle longer than deep, its length/depth 1.10-1.44; chest scales relatively small, 12-14 in mid-ventral line between the row's origin on the isthmus and its termination between pelvic fins; colouration of breeding males distinctive with a well-marked series of maroon red spots along flanks, in parallel rows along scale rows except rows on and above upper lateral line (Ref. 49182).

Biologi     Ordlista (t.ex. epibenthic)

Inhabits swampy lakes and slow streams (Ref. 4967). The maximum length of 110 cm given by Eccles (1992) [Ref. 4967] is apparently a mistake, maybe for 11.0 cm.

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Mouthbrooding by females.

Main reference Upload your references | referenser | Koordinator : Kullander, Sven O. | Medarbetare

van Oijen, M.J.P., J. Snoeks, P.H. Skelton, C. Maréchal and G.G. Teugels, 1991. Haplochromis. p. 100-184. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 4983)

IUCN Red List Status (Ref. 130435)

  Data deficient (DD) ; Date assessed: 23 May 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

Ytterligare information

Trophic ecology
Födoslag
Diet compositions
Food consumptions
Food rations
Predatorer
Ecology
Ekologi
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduktion
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larver
Larvdynamik
Distribution
Länder
FAO områden
Ekosystem
Förekomster
Utplanteringar
BRUVS - Videos
Anatomy
Gill areas
Hjärnstorlek
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fiskljud
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genetik
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Vattenbruksprofiler
Avelslinjer
Ciguatera cases
Stamps, coins, misc.
Outreach
Medarbetare
References
referenser

Verktyg

Special reports

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Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00700 - 0.03275), b=2.97 (2.80 - 3.14), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.0   ±0.3 se; based on size and trophs of closest relatives
Resiliens (Ref. 120179):  Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).