Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Cichliformes
(Cichlids, convict blennies) > Cichlidae
(Cichlids) > Geophaginae
Etymology: Gymnogeophagus: Greek, gymnos = naked + Greek, gea = the earth + Greek, phaegein, to eat (Ref. 45335); constellatus: Name from Latin 'constellatus' meaning studded with stars, referrring to the arrangement of white bright spots in the dorsolateral region of the body; an adjective in masculine form.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America: Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 13.7 cm SL male/unsexed; (Ref. 118066)
Morphology | Morphometrics
(total): 13 - 15;
soft rays: 8 - 9;
Vertebrae: 29. This species is distinguished from its congeners by the following characters: presence of a very large midlateral spot, where each scale forming the spot usually bears one large white dot; in adult males, midlateral spot is almost reaching the dorsal-fin base being about 4-5 scales wide and 4 scales tall (vs. with two or three scale rows distance from the dorsal fin base in other species); the midlateral spot of females and juveniles is also large, but usually not extending above the upper lateral line; upper lateral line with 18-21 scales, usually 18-20 (vs.13-19 in all other species) (Ref. 118066).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Malabarba, L.R., M.C. Malabarba and R.E. Reis, 2015. Descriptions of five new species of the Neotropical cichlid genus Gymnogeophagus Miranda Ribeiro, 1918 (Teleostei: Cichliformes) from the rio Uruguay drainage. Neotrop. Ichthyol. 13(4):637-662. (Ref. 118066)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00785 - 0.03846), b=3.04 (2.86 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 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.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .