Green Fire Tetra
Green Fire Tetra(Aphyocharax rathbuni) is also known as Rathbun’s Bloodfin — a vivid and active tetra with emerald-green body iridescence and vivid red-orange fin coloration creating the green-fire two-tone effect. Named for ichthyologist Mary Jane Rathbun.
Feeding & Care Tip:Sera Vipan Tropical FlakesandHikari Micro Pelletsmake excellent daily staples. Supplement 2–3× per week withHikari Frozen or Freeze-Dried Bloodworms,Hikari Frozen or Freeze-Dried Baby Brine Shrimp, orHikari Vibra Bites. Feed small amounts 2–3 times daily.
Native to the Paraguay and La Plata basins — a cool-tolerant species from the temperate southern part of the South American tetra range. More adaptable to lower temperatures than Amazonian species.
Keep in groups of at least 10. Cool-water tolerant — compatible with temperate species. The green body and red fins are most vivid in good lighting.
A vivid two-tone tetra with cool-water tolerance — excellent for unheated or cool aquariums alongside White Clouds.
Care & Ideal Parameters
| Difficulty | Easy |
| Temperament | Peaceful — schooling community |
| Typical Adult Size | 2.0 inches (5 cm) |
| Min. Group Size | 10 minimum |
| Ideal Temp | 64–82°F (18–28°C) |
| Ideal pH | 6.0–7.5 |
| Ideal GH | 5–20 dGH |
| Ideal KH | 2–10 dKH |
| Staple Food | Sera Vipan Tropical Flakes; Hikari Micro Pellets |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Bloodworms; Hikari Frozen or Freeze-Dried Baby Brine Shrimp; Hikari Vibra Bites |
| Origin | Paraguay and La Plata basins, South America |
| Notes | Named for ichthyologist Mary Jane Rathbun. Green body + red fins. Cool-water tolerant. Paraguay / La Plata basin. |
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