Redtail Barb
Discherodontus ashmeadi
A rare, bottom-dwelling schooler with vivid red-tipped fins and secretive nocturnal habits.

About
The Redtail Barb (Discherodontus ashmeadi) is one of those species that most hobbyists have never encountered, and for good reason. It comes from localized populations in the Mekong and Maeklong river basins of Southeast Asia, rarely turns up in the trade, and has a reputation for being notoriously difficult to transport. In the wild it favors clear, fast-moving streams and rivers with gravel or stony substrates, spending time near the bottom in pools where decaying plant debris accumulates, and reportedly foraging at night. Villagers in parts of Laos consistently found it active only after dark, which hints at nocturnal tendencies worth keeping in mind in the aquarium. Visually, it's distinguished from close relatives by the red to pink coloration in the dorsal and caudal fins, versus the orange tones of Discherodontus halei, and by a dark blotch on the dorsal fin that persists into adulthood rather than fading over time. It's a peaceful schooling species and does best in groups of at least six, where males will compete with each other and display their best color. Tank companions should be non-aggressive species comfortable in well-oxygenated, moderately flowing water. One critical handling note: this fish loses scales easily when lifted from the water and those bare patches are prone to infection, so always transfer it submerged. It's one for the patient, experienced keeper.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Redtail Barb
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Redtail Barb get?
- The Redtail Barb reaches about 4–5.5" as an adult.
- What size tank does the Redtail Barb need?
- A minimum of 43 gallons is recommended for the Redtail Barb, with more room needed for a proper group.
- What water parameters does the Redtail Barb need?
- The Redtail Barb does best with a temperature of 73–79°F, a pH of 6–7.5, hardness around 2–15 dGH.
- Is the Redtail Barb aggressive?
- The Redtail Barb is generally peaceful and suits a community tank with similarly calm tankmates.
- What does the Redtail Barb eat?
- The Redtail Barb is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
- How long does the Redtail Barb live?
- With good care, the Redtail Barb typically lives 5-8 years.