Hyphessobrycon agulha

Hyphessobrycon agulha (also known as the red-tailed flag tetra) is a species of tetra in the family Characidae. As a freshwater fish, it inhabits the basin of the Madeira River in Brazil along with parts of Peru and Bolivia, and it reaches a maximum length of 4.3 centimetres (1.7 in).^[2] Though it is mainly found in the wild, it is occasionally kept by fishkeepers^[3] and is sometimes confused with the neon tetra.^[4] The fish is primarily an insectivore, though it does eat vegetable matter.^[5] It is considered to form a group with other species in Hyphessobrycon as they share a dark stripe running lengthwise.^[6]

Hyphessobrycon agulha
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Characiformes
Family:	Acestrorhamphidae
Genus:	Hyphessobrycon
Species:	H. agulha
Binomial name
Hyphessobrycon agulha (Fowler, 1913)

While its name comes from the native name for this species along the Madeira River in Brazil,^[7] the fish also occurs in Colombia and Peru.