Breast toothcarp (Phalloceros titthos), first described by Lucinda, 2008 is a tiny fish in the family Poeciliidae (order Cyprinodontiformes). Adults typically reach 2.60 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Poeciliidae kept in the hobby.
Dorsal soft rays (total): 8 - 9; Anal soft rays: 9 - 11; Vertebrae: 30 - 32. Diagnosed from all other species of the genus Phalloceros by having a very large papilla at the mandibular symphysis of large adult females .
Behavioural data for Breast toothcarp is currently being reviewed.
Freshwater; benthopelagic. Tropical South America: coastal drainages flowing to Baia de Guaratuba and Baia de Paranaguá in Paraná, Brazil.
The following diseases are known to affect Breast toothcarp.
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