Care guide, husbandry, breeding, disease, sourcing, and tankmate intelligence on Rosy Barb - written by the Fast Aquatics editorial team and cross-verified against vendor records on the live marketplace.
Rosy Barb (Pethia conchonius) is a freshwater fish kept by aquarists for community + species-specific freshwater displays. Hardy and forgiving of typical beginner mistakes when given proper water chemistry.
Where Rosy Barb comes from
Rosy Barb (Pethia conchonius) is native to specific tropical and subtropical freshwater systems. The captive-bred Rosy Barb sold at most LFS comes from generations of farmed stock and is generally hardier and better-acclimated to tank conditions than wild-caught equivalents. Wild specimens are occasionally available for keepers chasing original-bloodline coloration or biotope-accurate stocking.
Rosy Barb tank size and setup
Rosy Barb requires a minimum of 30 gallons for healthy adults. The minimum is based on the species' adult size (4 inches), territorial range, and behavior pattern. Most Rosy Barb sold at small juvenile size will reach full adult size within 12-24 months and the system must be sized to the adult, not the juvenile.
For a Rosy Barb setup: tank sized for the adult footprint, HOB or canister filter rated 4-6x tank volume, dechlorinated water, appropriate temperature heater, and stocking-appropriate hardscape and plants.
Use dechlorinator on every water change. Test parameters weekly during cycling, biweekly once stable. Stable consistency beats sliding-scale "ideal" parameters.
What Rosy Barb eats
Rosy Barb is a omnivore. Eats a varied diet of pellets, frozen foods, and supplemental greens. Quality flake or pellet (Hikari, New Life Spectrum, Tetra) plus frozen mysis or bloodworms 2-3x weekly produces best color and behavior. Feed Rosy Barb appropriately for its size + activity level. Overfeeding is the #1 cause of water-quality crashes in tanks of all sizes.
Rosy Barb tankmates and compatibility
Rosy Barb works in community tanks with peaceful species in similar size class. Adult-size matters more than purchase-size when planning stocking. Avoid mixing aggressive with passive species.
Browse care guides for tankmate-compatibility tables for Rosy Barb and similar species.
Rosy Barb adult size and lifespan
Rosy Barb reaches 4 inches at adulthood with a captive lifespan of 5-7 years with proper care. Most freshwater species live 3-10 years; larger species (oscars, plecos, knifefish) reach 10-20+ years.
Can you breed Rosy Barb?
Rosy Barb can be bred in dedicated breeding tanks with appropriate setup and water-chemistry triggers. Research the species-specific breeding requirements before attempting.
Common Rosy Barb diseases and problems
Rosy Barb is susceptible to standard freshwater diseases (ich, columnaris, fin rot, bacterial infections). Quarantine new Rosy Barb for 4 weeks before adding to your display tank. Treat fish in a separate hospital tank to avoid affecting plants and inverts. Most disease outbreaks trace back to poor water quality, chronic stress, or skipped quarantine.
Where to buy Rosy Barb online
Rosy Barb is sold at LFS (local fish stores), online retailers, and direct from breeders/wholesalers. Pricing varies widely by source, size, and quality:
Browse live Rosy Barb from vetted Fast Aquatics vendors with carrier-tracked overnight shipping (FedEx Priority + UPS Next Day), climate-aware hold logic, and a 4-hour DOA window with photo-evidence claims. Captive-bred or aquacultured specimens cost more upfront but arrive healthier and integrate faster.
Rosy Barb FAQ
How big does Rosy Barb get?
4 inches at adulthood within 12-24 months.
How long does Rosy Barb live?
5-7 years with proper care.
What is the minimum tank/pond size?
30 gallons, with larger systems strongly recommended.
Is Rosy Barb hard to keep?
Rosy Barb is rated beginner difficulty.
What does Rosy Barb eat?
Rosy Barb is a omnivore; appropriate diet matches its natural feeding pattern.