|Neon tetra (P. innesi)|
Paracheirodon is a genus of freshwater fish in the family Characidae of the order Characiformes. The type species is P. innesi, the well-known neon tetra, and the Paracheirodon species are among the fishes known as tetras. All species of this genus are native to the Neotropic ecozone, occurring in the Orinoco and Amazon Basins in northern South America.
Paracheirodon tetras reach maximum overall lengths of 2.5 to 5 cm (0.98 to 1.97 in) depending on the species, and are of elongated, tetra shapes. All share a distinctive iridescent blue lateral line, but differ slightly in their other colorations.
Preferring soft, acidic waters, these midwater shoaling fishes feed predominantly on small crustaceans, insects, worms, and zooplankton. When spawning, they scatter their eggs and guard neither eggs nor young.
The currently recognized species in this genus are:
|Species of Paracheirodon|
|Binomial and common names||Image||Description||Range|
|Paracheirodon axelrodi (L. P. Schultz, 1956)
|Upper Orinoco and Negro Rivers in South America|
|Paracheirodon innesi (G. S. Myers, 1936)
|Southeastern Colombia, eastern Peru, and western Brazil, including the tributaries of the Solimões|
|Paracheirodon simulans (Géry, 1963)
(Green neon tetra)
|Upper Orinoco and Negro Rivers in South America.|