Von Rio Tetra
Hyphessobrycon flammeus

Care Level




Reef Compatible


Plant Safe


Max Size

Less than 2

Minimum Tank Size



red, orange, gold, white



Water Conditions

72-78° F, KH 4-8, pH 5.5-7.5


General: The von rio tetra originates from coastal rivers mainly in Brazil. They prefer to be in schools of six or more individuals; keeping this many fish in a group will help reduce shyness in the aquarium and allow the fish to exhibit more of their natural behavior. Von rio tetras also will enjoy a planted aquarium with lots of structure such as driftwood to mimic their home habitat in Brazil. This tetra species also does best in slightly acidic water conditions with a slight water current. Adding driftwood or peat moss to the aquarium will help to lower the pH through the tannins it releases into the water.

Dimorphism: One of the differences between the male and female von rio tetras regards their anal fin. Males have a deep red anal fin while females have more of a yellow colored anal fin. Additionally, the pectoral fin of the female may have some black coloration.

Fecundity: Von rio tetras will scatter eggs over java moss or spawning mops. It is recommended to have a group ranging from 10-12 individuals for spawning and in order to condition them, provide the von rio tetras with high quality food such as frozen or live brine shrimp and blood worms. Once spawning has finished remove the adults and wait for the eggs to hatch. The fry will at first only accept infusoria and once they grow a little larger will accept baby brine shrimp.

Aquarium Diet: Von rio tetras will gladly accept fish flake, pellets, granules, brine shrimp, and blood worm.

Compatibility: Von Rio tetras do well with members of their own species and will readily assume schooling behavior. They also do well with other tetras such as serpae tetras (Hyphessobrycon callistus) and red/blue Columbian tetras (Hyphessobrycon colimbianus), rasboras such as harlequin rasboras (Rasbora heteromorpha) and scissortail rasboras (Rasbora trilineata), corydoras catfish such as Sterba's corydoras (Corydoras sterbai), and peppered corydoras (Corydoras paleatus), and plecos such as bristlenose plecos (Ancistrus sp.).

Von Rio Tetra Videos

Author: Grant Stevens