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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Petrochromis: Latin, petra = stone + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Eponymy: Dr Ethelwynn Trewavas (1900–1993) was an eminent British ichthyologist. [...] (Ref. 128868), visit book page.
More on author: Poll.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk; pH range: 7.5 - 8.5; dH range: 10 - ?. Tropical; 23°C - 25°C (Ref. 2060); 7°S - 9°S
Africa: endemic to Lake Tanganyika, restricted to the southwestern part of the lake (Ref. 46829, 52921).
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 18.0 cm TL hane/ej könsbestämd; (Ref. 5679)
Lives in the shallow, rocky habitat; extremely shy; usually found in groups; feeds on algae and has long digestive tract (Ref. 46829). Feeds by scraping rock biocover (Ref. 6770, 46829). Females brood their young in the mouth (Ref. 46829, 86760).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Larvae of up to 3.17 cm TL are mouthbrooded by female parent 14.3 cm SL long (Ref. 86760).
Konings, A. and H.W. Dieckhoff, 1992. Tanganyika secrets. Cichlid Press. 207 p. (Ref. 52921)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Akvarium: Kommersiell
Verktyg
Särskilda rapporter
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Internet-källor
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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). |
Trofisk nivå (Ref. 69278) |
2.1 ±0.1 se; based on diet studies. |
Resiliens (Ref. 120179) |
Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.). |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (22 of 100). 🛈 |