Description
Rathbuni Bloodfin Tetra
The Rathbuni Bloodfin Tetra (Aphyocharax rathbuni), also known as the Green Fire Tetra or Redflank Bloodfin, is a beautiful South American freshwater fish prized for its shimmering green-silver body and delicate red markings. Native to the Paraguay River basin, this active schooling species is an excellent addition to peaceful community aquariums. Its subtle metallic colours become particularly striking when kept in a well-planted aquarium with a healthy group of its own kind.
Features of Rathbuni Bloodfin Tetra
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Scientific name: Aphyocharax rathbuni
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Common name: Rathbuni Bloodfin Tetra
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Origin: South America
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Adult size: Approximately 4–5 cm
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Temperament: Generally peaceful, occasionally nips fins
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Lifespan: Approximately 3–5 years
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Diet: Omnivorous
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Water temperature: 20–26°C
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pH: 6.5–7.5
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Social behaviour: Shoaling; keep in groups of at least 6–8
The best aquarium size for Rathbuni Bloodfin Tetra
A minimum aquarium size of 60 litres is recommended for a small group, although 70 litres or larger provides additional swimming space and helps maintain stable water conditions. These active mid-water swimmers appreciate open areas where they can school naturally.
Tank Mate Compatibility for Rathbuni Bloodfin Tetra
Rathbuni Bloodfin Tetras are suitable for peaceful community aquariums. Choose similarly sized species and avoid fish with long, flowing fins, as occasional fin-nipping can occur.
Suitable tank mates include:
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Neon Tetra
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Harlequin Rasbora
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Corydoras Catfish
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Bristlenose Catfish
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Kuhli Loach
Diet for Rathbuni Bloodfin Tetra
As omnivores, Rathbuni Bloodfin Tetras thrive on a varied diet of quality tropical flakes and small micro-pellets. Supplement their diet with frozen or live foods such as brine shrimp, daphnia and bloodworms. Regular nutritional variety helps maintain their health and vibrant colouration.
Aquarium Setup Rathbuni Bloodfin Tetra
Aquarium Filtration
Use reliable biological and mechanical filtration to maintain clean, well-oxygenated water. Moderate water flow is ideal.
Aquarium Plants
Dense planting provides security, while floating plants create shaded areas and natural cover.
Aquarium Lighting
Moderate lighting highlights their metallic green-silver colouration.
Aquarium Heating
Maintain a stable temperature between 20–26°C.
Aquarium Substrate
Fine gravel or sand works well, with darker substrates helping enhance their natural colours.
Aquarium Decorations
Incorporate driftwood, roots and smooth stones while leaving plenty of open swimming space.
