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Teleostei (teleosts) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology:

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

Freshwater; brackish; benthopelagic; pH range: 6.0 - 7.0; non-migratory; depth range 20 - 80 m (Ref. 35237). Tropical; 26°C - 30°C (Ref. 35237)

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

South America: French Guiana (Ref. 36579) and Suriname (Ref. 59052). Status of this species is uncertain; possibly a regional form of Rivulus urophthalmus.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.1 cm SL male/unsexed; (Ref. 101566)

Occurs in flooded savannas and coastal swamps which are sunlit. Frequently found in shallow waters and is sympatric with other Rivulus of French Guiana except R. ocellatus (Ref. 27188). Not a seasonal killifish. Juveniles are released from eggs measuring 1.2 mm (Ref. 35237). Sexual differentiation is possible at 4 months; sexual maturity is reached at 5 months of age (Ref. 27188). Calm and passive; is easy to maintain in the aquarium (Ref. 27139).

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

The eggs are of 1.2 mm diameter. Sexes can be distinguished at 4 months of age.

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)

Least Concern (LC) ; Date assessed: 01 March 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: of no interest; aquarium: commercial

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=0.00776 (0.00436 - 0.01383), b=3.05 (2.89 - 3.21), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (tm=0.4).

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

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