Scientific Name: Exodon paradoxus
Status: Data Deficient
Habitat: These fish are found in Amazon and the Tocantin Rivers in Brazil and Guyana.
Diet: These insectivores will also eat the scales off of other fish.
Length: 2.9 inches
Lifespan: 8–10 years
This species namesake buck teeth are specifically designed to pick scales off of other fish. With especially strong jaws, bucktooth tetras have been seen attacking fish whose scales are particularly shiny. Tetras are relatively small fish who fiercely defend their territory, forming schools of eight or more individuals.