Glass Bloodfin Tetra
Glass Bloodfin Tetra
Glass Bloodfin Tetra (Prionobrama filigera) combines the transparent ghost-like body quality of glass tetras with vivid red coloration in the caudal fin — creating a fish that appears to be a floating red tail attached to a nearly invisible body. The internal organs and spine are faintly visible through the translucent flanks.
Feeding & Care Tip: Sera Vipan Tropical Flakes and Hikari Micro Pellets make excellent daily staples. Supplement 2–3× per week with Hikari Frozen or Freeze-Dried Bloodworms, Hikari Frozen or Freeze-Dried Baby Brine Shrimp, or Hikari Vibra Bites. Feed small amounts 2–3 times daily.
Native to the Paraguay and lower Amazon River systems in Argentina, Paraguay, and Brazil — a cool-tolerant tetra from the southern part of the South American range.
Keep in groups of at least 10. The semi-transparent body makes the red caudal fin appear almost detached in motion — striking in a large school. More cool-water tolerant than most tetras.
An unusual and beautiful transparency tetra — the floating red tail effect is genuinely unlike any other fish.
Care & Ideal Parameters
| Difficulty | Easy |
| Temperament | Peaceful — schooling community |
| Typical Adult Size | 2.0 inches (5 cm) |
| Min. Group Size | 10 minimum |
| Ideal Temp | 64–79°F (18–26°C) |
| Ideal pH | 6.0–8.0 |
| 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 lower Amazon systems, Argentina, Paraguay, Brazil |
| Notes | Semi-transparent body with vivid red caudal fin. Cool-water tolerant. |
