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Teleostei (teleosts) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology: Maratecoara: A Brazilian name from Aruana/Goias; gesmonei: Named gesmonei in gratitude and recognition to Gesmone Fernandes Godoy, who discovered the species (Ref. 95615).
Eponymy: Gesmone Fernando Godoy is an ornamental fish trader in Brazil. He discovered this species. (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

South America: Brazil, Pará state, São Félix do Xingu, temporary pool at island in the middle of the rio Xingu (Ref. 95615).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 2.3 cm SL male/unsexed; (Ref. 95615); 2.5 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 10 - 11; Anal spines: 0; Anal soft rays: 14 - 15; Vertebrae: 25 - 26. Diagnosis: male body depth 23.7-25.9% SL; caudal peduncle depth, 13.0-15.5% SL; length of dorsal-fin base, 13.5-14.5% SL; length of anal-fin base, 19.7-21.5% SL; caudal-fin length, 34.1-41.4% SL; pelvic-fin length, 12.2-14.8%SL; head depth, 62.5-64.6% HL; head width, 33.8-35.7% HL; pectoral-fin posterior margin reaching vertical between base of the 1st and 2nd anal-fin rays; contact organs absent; anal-fin origin between pleural ribs of 12th and 13th; 24-25 caudal-fin rays; 7 pelvicfin rays; 8 transverse series of scales; 25-26 vertebrae; female body depth 23.9-25.9% SL; caudal peduncle depth, 12.7-12.9% SL; length of dorsal-fin base, 11.3-13.3% SL; length of anal-fin base 15.9-18.1% SL; caudal-fin length 31.9-37.2% SL; pectoral-fin length, 19.1-23.8% SL; head depth 63.0-64.7% HL; head width 35.3-39.7% HL; eye diameter 30.8-33.0% HL (Ref. 95615).

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

Main reference Upload your references | References | Coordinator : Costa, Wilson J.E.M. | Collaborators

Nielsen, D.T.B., M. Martins and R. Britzke, 2014. Description of a new species of annual fish, Maratecoara gesmonei (Cyprinodontiformes: Rivulidae) from the rio Xingu system, Amazon basin, Brazil. aqua, Int. J. Ichthyol. 20(2):87-96. (Ref. 95615)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 07 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Ecology
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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00977 (0.00315 - 0.03034), b=3.03 (2.77 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.1 ±0.4 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).

Maratecoara gesmonei Nielsen, Martins & Britzke, 2014