Filament Barb
Filament Barb (Dawkinsia filamentosus) is one of the most impressive barbs available for larger aquariums. Males develop spectacular elongated filamentous extensions on the dorsal fin rays that trail gracefully as the fish swims — the 'filament' of the common name. The body displays warm red-orange tones with dark markings and iridescent scaling, making this a genuinely beautiful large barb.
Feeding & Care Tip: Hikari Micro Pellets and Sera Vipan Tropical Flakes make excellent daily staples. Supplement 2–3× per week with Hikari Frozen or Freeze-Dried Bloodworms or Hikari Vibra Bites. Hikari Frozen or Freeze-Dried Baby Brine Shrimp are a good additional treat. Feed 2–3 times daily.
Native to fast-flowing rivers and streams of the Western Ghats in southwestern India — one of the world's most biodiverse freshwater regions. This species appreciates good water movement and oxygenation in the aquarium. A larger tank of at least 4 feet is recommended for a proper school.
Keep in groups of at least six. The Filament Barb is active, peaceful, and impressive at scale — a large school in a long aquarium is a spectacular sight. Compatible with other large, peaceful community fish. Males display their filamentous dorsal extensions in competition, keeping the group constantly animated.
Egg-scatterer. Males in full display with dorsal filaments extended and red-orange coloration at peak intensity are among the most impressive schooling fish available. A fish that rewards being kept in a large group in a spacious, well-oxygenated aquarium.
Care & Ideal Parameters
| Difficulty | Easy |
| Temperament | Peaceful — community |
| Typical Adult Size | 4.5 inches (11 cm) |
| Min. Group Size | 6 minimum — needs a tank of at least 4 feet |
| Ideal Temp | 72–79°F (22–26°C) |
| Ideal pH | 6.5–7.5 |
| Ideal GH | 4–15 dGH |
| Ideal KH | 2–8 dKH |
| Staple Food | Hikari Micro Pellets; Sera Vipan Tropical Flakes |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Bloodworms; Hikari Vibra Bites; Hikari Frozen or Freeze-Dried Baby Brine Shrimp |
| Origin | Western Ghats, southwestern India |
| Notes | Males develop elongated filamentous dorsal fin extensions. Large species — needs a 4-foot tank. Western Ghats origin. Good water movement appreciated. |
