Phalloceros lucenorumPhalloceros lucenorum, the Jaquiá toothcarp, is a species of poeciliid fish native to Brazil.DistributionPhalloceros lucenorum is found in Brazil in the Rio Juquiá, which is a tributary to the drainage of the rio Ribeira de Iguape in São Paulo, Brazil.SizeThe females of this species grow to a total length of, while males remain smaller at.HabitatThe fish live in tropical freshwater; and are benthopelagic.EtymologyThe fish is named in Latin = elachis, small, or short or little; –istos, meaning least, referring to small size.