Phalloceros buckupi, the JacareÃÂ toothcarp, is a species of poeciliid fish native to Brazil.
Phalloceros buckupi is found in the Rio Jacareàdrainage and neighbouring, which flows into the BaÃÂa de Paranaguá in Paraná, Brazil.
The females of this species grow to a total length of , while males remain smaller at . .
The fish live in tropical freshwater; and are benthopelagic.
The fish is named in honor of Paulo A. Buckup (b. 1959), the collector of the most specimens of this species, and for his many contributions to neotropical ichthyology.