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Teleostei (teleosts) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
More on author: Costa.

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

Freshwater; benthopelagic; pH range: 6.5 - 7.0; non-migratory. Tropical; 25°C - 28°C (Ref. 13614)

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

South America: Tapajós River basin, Brazil.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 4.0 cm TL male/unsexed; (Ref. 27139)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 10 - 11; Anal soft rays: 13 - 14; Vertebrae: 30. Sides of body and unpaired fins of males without dark markings. 31-35 total caudal-fin rays. Body depth always greater than 20.0% SL (Ref 26657).

Not a seasonal killifish. Is difficult to maintain in aquarium (Ref. 27139).

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

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

Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)

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 |

More information

Trophic ecology
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Ecology
Ecology

Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Abundance

Life cycle
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Maturity
Maturity/Gills rel.
Fecundity
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Eggs
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Distribution
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Anatomy
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Internet sources

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 (0.00305 - 0.01429), b=3.10 (2.91 - 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).

Melanorivulus modestus (Costa, 1991)