Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Cichlidae
(Cichlids) > Pseudocrenilabrinae
Etymology: Trematochromis: Greek, trematos = hole + Greek, chromis, = a fish, perhaps a perch (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; pH range: 7.4 - 8.4; dH range: 7 - 30. Tropical; 23°C - 27°C (Ref. 13614); 3°S - 6°S
Africa: northern part of Lake Tanganyika (Ref. 4983).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.5 cm TL male/unsexed; (Ref. 4983)
(total): 16 - 18;
soft rays: 7 - 8. Body deep and moderately compressed (Ref. 57075). Presence of a thick sensory canal on the six infraorbitals, with large openings that are widely separated from each other (Ref. 57075). Unicuspid outer and inner teeth on both jaws; outer teeth arranged in a single regular row; inner teeth smaller than outer teeth, arranged in three to six irregular rows on anterior part of upper jaw (Ref. 57075). Presence of 2 scale rows between upper and lower lateral lines (Ref. 57075). Scales ctenoid on flank; cheek scaled; dorsal and anal fins with scales at base; caudal fin with small scales anteriorly on fin membranes between rays; paired fins without scales (Ref. 57075). Upper lateral line high on body with 21-25 scales, lower lateral line running along body axis with 11-16 scales, two pored scales anteriorly on caudal fin (Ref. 57075).
The mouth is very protrusable which favor the idea of a planktonic diet (Ref. 7343).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mouthbrooding by females.
van Oijen, M.J.P., J. Snoeks, P.H. Skelton, C. Maréchal and G.G. Teugels, 1991. Haplochromis. p. 100-184. 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. 4983)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00690 - 0.03171), b=2.97 (2.80 - 3.14), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.45 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (24 of 100) .