Tylochromis bangwelensis, Hump-back bream : fisheries

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Tylochromis bangwelensis Regan, 1920

Hump-back bream
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Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tylochromis: Greek, tylos = callus + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
More on author: Regan.

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

; zoetwater benthopelagisch. Tropical

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Africa: Luapula, Lake Bangwelu and surrounding swamps, and the Chambezi (upper Congo River basin) in Democratic Republic of the Congo and Zambia (Ref. 246, 45616, 52346). Reports from the Luvua, upper Lualaba and lakes Mweru and Upemba (Ref. 2970, 45616) based on misidentifications (Ref. 52346).

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: Lm 11.5, range 11 - 12 cm
Max length : 27.5 cm TL mannelijk/geslacht niet bekend; (Ref. 52962)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 13 - 15; Dorsale zachte stralen (totaal): 14-16; Anale stekels 3; Anale zachte stralen: 7 - 8; Wervels: 28. Diagnosis: lower lateral line extending far forward (Ref. 52962).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Predominant food is the lake-fly in its larval aquatic stages (Ref. 246). Also feeds on plants; maternal mouthbrooder that does not pair-bond (Ref. 52307). Max. length of 27.5 cm presumed to be TL.

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Female mouth-brooder; breeding occurs during the rainy seasons and the young, a favorite prey for the tiger-fish, keep closer inshore among Eleocharis reed and other vegetation (Ref. 246). Young fish still attached to the yolk sac can be found in the mouth of a parent which is at the verge of spawning again (Ref. 52961). The species breeds during a single spawning period toward the end of the rainy season (Ref. 2774). At highwater, the fish move from the lake to their breeding grounds in adjacent swamps to spawn (Ref. 52346).

Voornaamste referentie Upload your references | Referenties | Coördinator : Kullander, Sven O. | Medewerkers

Stiassny, M.L.J., 1991. Tylochromis. p. 526-533. 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. 5714)

Status op de Rode Lijst van het IUCN (Ref. 125652)

  Niet bedreigd (LC) ; Date assessed: 16 February 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00977 - 0.03716), b=3.00 (2.84 - 3.16), in cm total length, based on LWR estimates for species & Genus-BS (Ref. 93245).
Trophic level (Ref. 69278):  3.2   ±0.40 se; based on food items.
Generation time: 2.7 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (tm=2-3; K=0.4).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (30 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Prijsklasse (Ref. 80766):   Unknown.