Rathbun's bloodfin

Aphyocharax rathbuni

Wild range: Rio Paraguay (South America)

At a glance: Rathbun's bloodfin care

Compiled reference information. Review the care notes and original sources below.

What temperature is listed for Rathbun's bloodfin?

The compiled profile lists 18.0–28.0 °C for Rathbun's bloodfin (Aphyocharax rathbuni). Check the original sources below for context and differing recommendations.

What tank size is listed for Rathbun's bloodfin?

The profile lists a minimum tank volume of 13.2 US gallons (50.0 liters). Volume alone does not establish suitability; consider dimensions, group size and other inhabitants alongside the full care notes.

What pH is listed for Rathbun's bloodfin?

The compiled profile lists a pH of 6.0–8.0. Review the cited care sources alongside the other water parameters in this profile.

Natural habitat

The Green Fire Tetra is found in the Rio Paraguay in South America, thriving in riverine habitats that can vary greatly depending on the season. They prefer gentle waters with ample floating plants, which provide cover and spawning sites.

Where they are found

This species originates from the Paraná River basin across Brazil, Paraguay, and Argentina, where it is found in varied freshwater habitats, often shaded by vegetation that provides cover and safety.

Aquarium care

In captivity, it is essential to maintain stable water conditions. Gentle filtration and regular water changes help achieve suitable conditions for the Green Fire Tetra. They flourish best in a planted aquarium where they can swim among the vegetation. Providing a school of at least six will enhance their well-being and display natural behaviors.

Feeding

Bloodfin Tetras are not picky eaters and will accept a variety of foods including flakes, micro pellets, and live or frozen foods like bloodworms and brine shrimp. A balanced diet will enhance their coloration and overall vitality, making regular feeding of high-quality foods essential.

Compatibility

As generally peaceful fish, Bloodfin Tetras are excellent community tank dwellers, especially with small characids, Corydoras, and other quick, non-finned species. It's advisable to avoid pairing with slow-moving or long-finned fish to prevent fin-nipping behavior, ensuring a harmonious aquarium environment.

Breeding

Breeding can be achieved by setting up a breeding tank with floating plants such as Java moss. Provide a suitable environment with gentle water flow and set the temperature around 25.5°C. The female will lay eggs among the plants, and it's best to remove the adult fish after spawning to prevent them from eating the eggs.

Sources

Compiled from multiple independent care sheets — not copied from a single site.