Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Cichlidae
(Cichlids) > Pseudocrenilabrinae
Etymology: Petrochromis: Latin, petra = stone + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Environment / Climate / Range
Freshwater; benthopelagic; pH range: 7.5 - 8.5; dH range: 10 - ?. Tropical; 23°C - 25°C (Ref. 2060); 7°S - 9°S
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.0 cm TL male/unsexed; (Ref. 5679)
Africa: endemic to Lake Tanganyika, restricted to the southwestern part of the lake (Ref. 46829, 52921).
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).
Konings, A. and H.W. Dieckhoff, 1992. Tanganyika secrets. Cichlid Press. 207 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Fisheries: ; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01450 (0.00585 - 0.03592), b=3.03 (2.82 - 3.24), based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic Level (Ref. 69278
): 2.1 ±0.1 se; Based on diet studies.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (21 of 100) .