>
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).
Eponymy: Denis (d: 1949) and Sharon Tweddle are husband and wife and together were honoured in the name of the dwarf sanjika for their contributions (e. [...] (Ref. 128868), visit book page.
Taxonomic Remarks
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.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico. Tropical; 14°S - 16°S
Africa: Lakes Chilwa and Chiuta and in flowing rivers (Ref. 4983, 49182).
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 9.0 cm SL maschio/sesso non determinato; (Ref. 49182)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 14 - 16; Raggi dorsali molli (totale) : 9 - 10; Spine anali: 3; Raggi anali molli: 8 - 10; Vertebre: 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).
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.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Mouthbrooding by females.
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.01445 (0.00671 - 0.03113), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.0 ±0.3 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |