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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
Ekologi
; sötvatten bentopelagisk. Tropical
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 / Vikt / Age
Maturity: Lm 11.5, range 11 - 12 cm
Max length : 27.5 cm TL hane/ej könsbestämd; (Ref. 52962)
Short description
Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt): 13 - 15; Mjukstrålar i ryggfenan (totalt): 14-16; Taggstrålar i analfenan 3; Mjukstrålar i analfenan: 7 - 8; Ryggkotor: 28. Diagnosis: lower lateral line extending far forward (Ref. 52962).
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
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
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).
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Fiskeri:
Ytterligare information
referenserVattenbrukVattenbruksprofilAvelslinjerGenetikElectrophoresesÄrftlighetSjukdomarBehandlingNutrientsMass conversion
MedarbetareBilderStamps, Coins Misc.LjudCiguateraHastighetSimsättGälytaOtolithsHjärnstorlekSyn
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00986 - 0.03683), b=3.00 (2.83 - 3.17), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trofisk nivå (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.
Resiliens (Ref.
120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (tm=2-3; K=0.4).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).
