Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cyprinodontiformes
(Rivulines, killifishes and live bearers) > Poeciliidae
(Poeciliids) > Poeciliinae
Etymology: Phalloceros: Greek, phallos = penis + Greek, keras = horn (Ref. 45335); buckupi: Named for Paulo A. Buckup (collector of most specimens of this species), in recognition of his many contributions to Neotropical ichthyology.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
South America: Rio Jacareí drainage and neighbouring, which flows into the Baía de Paranaguá in Paraná, Brazil.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.0 cm SL male/unsexed; (Ref. 76852); 3.3 cm SL (female)
Morphology | Morphometrics
soft rays: 9 - 10;
Vertebrae: 32. Diagnosed from all other species of the genus except Phalloceros megapolos, Phalloceros spiloura, Phalloceros malabarbai, Phalloceros alessandrae, Phalloceros anisophallos, Phalloceros uai, Phalloceros lucenorum, Phalloceros pellos, and Phalloceros reisi by the female urogenital papilla curved
to the right, located laterally (vs. slightly left turned and with a lateral ramus or straight located along midventral line); and border of the anal aperture in contact with the first anal-fin ray or very close to it (vs. separated from first anal-fin ray by the female urogenital papilla). Differs from Phalloceros spiloura by the absence of a caudal peduncle spot (vs. presence
of caudal peduncle spot); from Phalloceros megapolos by the gonopodium appendix normally developed (vs. greatly expanded in wing like projections); from Phalloceros uai by the absence of a wide and square-shaped lateral spot in large specimens (vs. presence of such spot). Distinguished from Phalloceros alessandrae and Phalloceros malabarbai by halves of gonopodial paired appendix sickle like (vs. not sickle like); medial corner absent (vs. present); hook on left half of gonopodial paired appendix and right hook absent (vs. hook on both halves of gonopodial paired appendix); and left hook small, directed downward or up- and forward, and located closer to the base of gonopodial appendix (vs. hooks large downward directed and located in the corner of gonopodial appendix). Differs from Phalloceros anisophallos, Phalloceros lucenorum, Phalloceros pellos, and Phalloceros reisi by the halves of the gonopodium slender and similar to each other (vs. halves of the gonopodium wide and different from each other; right half wider than left one) (Ref. 76852).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lucinda, P.H.F., 2008. Systematics and biogeography of the genus Phalloceros Eigenmann, 1907 (Cyprinodontiformes: Poeciliidae: Poeciliinae), with the description of twenty-one new species. Neotrop. Ichthyol. 6(2):113-158. (Ref. 76852)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00692 (0.00300 - 0.01594), b=3.13 (2.94 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.0 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (13 of 100) .