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Teleostei (teleosts) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology: ubirajarai: From the author, Wilson Costa: "the name ubirajarai is in honour of Ubirajara Martins, entomologist at Museu de Zoologia, Universidade de Sao Paulo, professor of principles of taxonomy, who was teacher and friend during my early formation in Systematics, providing great enthusiasm for studying taxonomy of killifishes about 30 years ago" (Ref. 92338).

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

Freshwater; pelagic. Tropical; 17°S - 18°S, 52°W - 53°W

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

South America: Brazil, Estado de Goias, Municipo de Mineiros. Known only from the type locality, a stream tributary to the Babilônia River, upper Araguaia River Basin (Ref. 92338).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.0 cm SL male/unsexed; (Ref. 92338); 2.7 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Differs from all other species of the genus, except M. litteratus, by the presence of a short dark yellowish grey stripe on the caudal fin in females, connecting black caudal spot on the middle of the fin (vs. never a horizontal mark in this position) (Ref. 92338).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

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

Costa, W.J.E.M., 2012. Two new species of Melanorivulus from the Caiapós hill, upper Araguaia river basin, Brazil (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 23(3):211-218 (Ref. 92338)

IUCN Red List Status (Ref. 130435)

Vulnerable (VU) (D2); 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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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00661 (0.00311 - 0.01404), b=3.09 (2.91 - 3.27), 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

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Melanorivulus ubirajarai Costa, 2012