Phalloceros ocellatus, the Prado toothcarp, is a species of poeciliid fish native to Brazil.
Distribution.
"Phalloceros ocellatus" is found in the coastal drainages between the Prado and the Sooretama in Brazil.
Size.
The females of this species grow to a total length of , while males remain smaller at .
Habitat.
The fish live in tropical freshwater; and are benthopelagic. 
Etymology.
The fish is named in Latin = meaning with little eyes, referring to eye-like spot, the "ocellus" on sides.