Abactochromis labrosus : fisheries, aquarium

Abactochromis labrosus (Trewavas, 1935)

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Abactochromis labrosus
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> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Abactochromis: Name from Latin 'abactus' meaning driven away, banished, expelled; and 'chromis' which is widely used as a root in generic names of cichlids. The name alludes to the solitary, wandering, apparently non-territorial habits of living individuals, and the removal of this species from Melanochromis which it has mistakenly remained for 75 years.
More on author: Trewavas.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

; süßwasser demersal; pH range: 7.0 - 8.5; dH range: 10 - 15; tiefenbereich 0 - 30 m (Ref. 85491). Tropical; 23°C - 26°C (Ref. 1672); 11°S - 14°S

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Africa: Lake Malawi (Ref. 85491).

Größe / Gewicht / Alter

Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 11.5 cm SL Männchen/unbestimmt; (Ref. 85491)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 15 - 17; Afterflossenstacheln: 3; Wirbelzahl: 28 - 29. This species is distinguished from all other mbuna genera by the following characters: strongly hypertrophied , papillose, medially lobate lips; large head at least 40% SL in > 5 cm SL individuals; premaxillary pedicel (ascending process) >35% HL. Other non-mbuna haplochromine species endemic to Lake Malawi resemble this species in having enlarged and often lobate lips, but all can be distinguished as follows: Placidochromis milomo with total vertebrae 30-31 (vs. 28-29 in Abactochromis), segmented anal-fin rays 9-10 (vs. 7-8), broad, black vertical bars below the dorsal-fin base 4 (vs. 6-7 narrow subdorsal bars when distinct), reaches at least 19 cm SL (vs. ca. 12 cm); Otopharynx pachycheilus with longer pectoral fin 38-44% SL (vs. 19-27), shorter premaxillary pedicel 24-35% HL (vs. 36-46), color pattern of three lateral spots (vs. vertical bars with no lateral spots), depth range of 78-135 m (vs. 0-30 m); Cheilochromis euchilus total vertebrae 30-31, head and jaws not laterally compressed (vs. distinctly compressed), 2-3- horizontal stripes (vs. narrow bars with no horizontal stripes); Chilotilapia rhoadesii total vertebrae 31, thickened lips with no median lobes (vs. strongly lobate medially), adult teeth for crushing gastropod molluscs - robust with crowns shaped like grains of wheat, blunt, recurved and grooved on the outer surface (vs. oral dentition not similarly specialized), head and jaws not laterally compressed (vs. compressed), 2-3 horizontal stripes (vs. narrow bars with no horizontal stripes); Eclectochromis spp. with total vertebrae 30, segmented dorsal-fin rays 10-11 (vs. 7-9), thickened lips with no median lobes, some submolariform posteromedian pharyngeal teeth (vs. posteromedian teeth slightly enlarged by their crowns laterally compressed), color pattern of vertical bars alternating with dark spots along dorsum (vs. bars only); Lichnochromis acuticeps total vertebrae 32, thickened lips with no median lobes, with oblique stripe from nape to base of caudal fin (vs. no oblique stripe) (Ref. 85491).
Body shape (shape guide): short and / or deep.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Found over rocky substrate (Ref. 6307).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

Hauptreferenz Laden Sie Ihre Referenzen hoch | Referenzen | Koordinator : Kullander, Sven O. | Partner

Oliver, M.K. and M.E. Arnegard, 2010. A new genus for Melanochromis labrosus, a problematic Lake Malawi cichlid with hypertrophied lips (Teleostei: Cichlidae). Ichthyol. Explor. Freshwat. 21(3):209-232. (Ref. 85491)

IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))

  nicht bedroht (LC) ; Date assessed: 22 June 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

Fischereien: kommerziell; Aquarium: Kommerziell
FAO - Publication: search | FishSource |

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Schätzungen auf der Grundlage von Modellen

Phylogenetischer Diversitätsindex
(Ref. 82804)
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.01862 (0.00830 - 0.04177), b=3.02 (2.83 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophische Ebene
(Ref. 69278)
3.4   ±0.4 se; based on size and trophs of closest relatives
Widerstandsfähigkeit
(Ref. 120179)
hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Anfälligkeit der Fischerei
(Ref. 59153)
Low vulnerability (16 of 100). 🛈
Preiskategorie
(Ref. 80766)
Unknown.