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Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Geophaginae
Etymology: Geophagus: Greek, gea = the earth + Greek, phagein = to eat (Ref. 45335); parnaibae: Named for the río Parnaíba basin where the species occurs.

Environment / Climate / Range Ecology

Freshwater; benthopelagic; pH range: 6.5 - 7.6. Tropical; 24°C - 31°C (Ref. 57445), preferred ?

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South America: Rio Parnaiba drainage in Brazil.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.6 cm SL male/unsexed; (Ref. 57445)

Short description Morphology | Morphometrics

Dorsal spines (total): 17; Dorsal soft rays (total): 9-11; Anal spines: 3; Anal soft rays: 7 - 8. Distinguished from all its congeners by the combination of the following characters: lack of a dark infraorbital stripe or black preopercular markings; a caudal fin with distinct longitudinal bands; only 30 to 31 scales in E1 row; and small size, maximum TL approximately 16 cm (Ref. 57445).

Inhabits bare sandy bottoms in brooks and small rivers with remarkably strong current during the rainy season. Also occurs frequently in pools and ponds with more or less stagnant water during the dry season and the period of low water (Ref. 57445). A specimen measuring 6.5 cm SL has 80% plant matter (mainly seeds), aquatic insect larvae, detritus and sand grains in its stomach and adjacent intestine (Ref. 57445).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Kullander, Sven O. | Collaborators

Staeck, W. and I. Schindler, 2006. Geophagus parnaibae sp. n. - a new species of cichlid fish (Teleostei: Perciformes: Cichlidae) from the Rio Parnaíba basin, Brazil. Zool. Abh. (Dresden) 55:69-75. (Ref. 57445)

IUCN Red List Status (Ref. 115185)

Not Evaluated

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FisheriesWiki |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01660 (0.00695 - 0.03965), b=3.04 (2.85 - 3.23), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 2.5 ±0.1 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Vulnerability (Ref. 59153): Low vulnerability (11 of 100) .

Entered by Torres, Armi G.

Modified by Bailly, Nicolas

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Geophagus parnaibae Staeck & Schindler, 2006