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Teleostei (teleosts) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Poeciliidae (Poeciliids) > Poeciliinae
Etymology: Phalloptychus: Greek, phallos = penis * Greek, ptyx, ptychos = fold (Ref. 45335).

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

Freshwater; pelagic; pH range: 6.8 - 8.0; dH range: ? - 25. Tropical; 24°C - 28°C (Ref. 26130)

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

South America: Brazil, Paraguay, Uruguay and Argentina (Ref. 9086).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 2.5 cm SL male/unsexed; (Ref. 26130); 4.0 cm (female)

Usually found in shallow, flowing and standing waters that can warm up considerably. Occurs in company with other livebearers, such as Poecilia vivipara and Jenynsia lineata. A photo of this species taken from Santos channel, state of São Paulo, Brazil has a maximum length of 3.3 cm SL (photo by T. Vaske, Jr.).

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

After 24 days gestation, gives birth to 10-30 young.

Main reference Upload your references | References | Coordinator | Collaborators

Wischnath, L., 1993. Atlas of livebearers of the world. T.F.H. Publications, Inc., United States of America. 336 p. (Ref. 26130)

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

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Trophic ecology
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Ecology
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Length-weight rel.
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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00891 (0.00482 - 0.01646), b=3.22 (3.06 - 3.38), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic level (Ref. 69278): 3.0 ±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).

Phalloptychus januarius (Hensel, 1868)