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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.

Environment: milieu / climate zone / गहराई सीमा / distribution range पारिस्थितिकी

; स्वच्छ जल, अलवण जल बेनथोपिलाजिक; pH range: 7.5 - 8.5; dH range: 10 - ?. Tropical; 23°C - 25°C (Ref. 2060); 7°S - 9°S

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | बिन्दु नक्शा | भूमिका | Faunafri

Africa: endemic to Lake Tanganyika, restricted to the southwestern part of the lake (Ref. 46829, 52921).

आकार / वज़न / Age

परिपक्व अवधि: L_m ? range ? - ? cm
Max length : 18.0 cm TL पुल्लिंग / अलिंग; (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).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Larvae of up to 3.17 cm TL are mouthbrooded by female parent 14.3 cm SL long (Ref. 86760).

Main reference Upload your references | संदर्भ | संयोजक : Kullander, Sven O. | सहयोगीयो

Konings, A. and H.W. Dieckhoff, 1992. Tanganyika secrets. Cichlid Press. 207 p. (Ref. 52921)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Least Concern (LC) ; Date assessed: 31 January 2006

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

जलजीवालय: व्यापारिक

FAO - Publication: search | FishSource |

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इंटरनेट स्रोत

Estimates based on models

Phylogenetic diversity index (संदर्भ 82804): PD₅₀ = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01862 (0.00830 - 0.04177), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (संदर्भ 69278): 2.1 ±0.1 se; based on diet studies.

लौटाव (संदर्भ 120179): ऊंचा, न्यूनतम जनसंख्या दुगनी समय अवलागत 15 महीने। (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100). 🛈

Petrochromis trewavasae Poll, 1948