Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) > Cichliformes
(Cichlids, convict blennies) > Cichlidae
(Cichlids) > Ptychochrominae
Etymology: Ptychochromoides: Greek, ptyx, ptychos = fold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
Africa: central Madagascar.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.3 cm SL male/unsexed; (Ref. 53256)
Morphology | Morphometrics
Differs from congeners by the presence of a pronounced occipital hump, regardless of size, sexual maturity or sex; shorter predorsal length; more elongate terminal dorsal-fin spine; and shorter snout (Ref. 53256).
The largest specimen caught was in the immature stage (Ref. 53256).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sparks, J.S., 2004. A new and presumably extinct species of Ptychochromoides (Teleostei: Perciformes: Cichlidae) from central Madagascar. Zootaxa 524:1-15. (Ref. 53256)
IUCN Red List Status (Ref. 126983)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this BS (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).