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Odessa Barb© Waitingonthetide / CC BY-SA 3.0

Odessa Barb

The Odessa Barb is a small, striking barb known for the bold red-orange band running along the male's body, accented by fins edged and marked with rows of black spots. Kept in a group, males compete for attention with their coloration, often intensifying it in the process. Females are plainer and slightly deeper-bodied, making the sexes easy to tell apart. Hardy and tolerant of cooler water temperatures, this fish is a forgiving choice for those new to tropical fishkeeping. Topping out around 4.6cm, its compact size and schooling behavior make it a popular, easygoing addition to a community tank.

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Odessa Barb key facts

Care level
Beginner-friendly
Lifespan
3-5 years
Size
Up to 4.6cm SL
Temperature
16〜25℃
Diet
Dried, frozen and live foods
Tank
Seriously Fish suggests an 80 x 30cm base of about 72 litres. Keep open swimming space but add plants and driftwood for cover, which helps it settle.
Water Temperature & Quality
Seriously Fish gives 16-25C, pH 6.5-8.5 and 5-20 dGH. It suits neutral to slightly alkaline, moderately hard water and takes cooler temperatures well.
Tank Mates
Very peaceful and a good community fish. Similar-sized open-water cyprinids, balitorid, cobitid and nemacheilid loaches, and benthic cyprinids such as Crossocheilus and Garra all suit it.
Diet & Feeding
It takes dried food readily, and regular small live or frozen foods such as bloodworm and Artemia deepen the red-orange of the males.
Breeding & Spawning
Pethia species are typically egg scatterers with no parental care. In good condition they spawn often, and fry sometimes appear unaided in a mature planted tank. For numbers, use a dimly lit spawning tank over mesh.
Health & Notes
Hardy and easy to keep. Young fish and females look plain in the shop, but mature males colour up strongly within a group. The IUCN rates it Data Deficient, so the state of wild populations is not well known. It is not listed by CITES.
TraitsSmall speciesShoalingHardyCyprinid

About Odessa Barb

The Odessa Barb is a small, hardy barb prized for the male's vivid red-orange stripe. Beginner-friendly and compact, growing to about 4.6cm.

7 things to know before welcoming a Odessa Barb

  1. 1Coloring improves in a group

    Males have a tendency to compete with one another for coloration, so keeping a group is recommended. Kept alone or in very small numbers, the vivid red-orange band may not develop as fully.

  2. 2Telling males from females

    Males show a broad red-orange band along the body with black-spotted, edged fins, while females are plainer in color and somewhat deeper-bodied — making the sexes fairly easy to distinguish.

  3. 3Hardy and cold-tolerant

    This is a robust species that adapts well to environmental changes and can tolerate relatively cool water temperatures, making it approachable even for first-time tropical fish keepers.

  4. 4Grows to about 4.6cm

    Adults reach only about 4.6cm at most, so they add presence to a tank without contributing much to bioload — an easy size to fit into a community setup.

  5. 5Choose peaceful tankmates

    Small and generally peaceful, this species pairs well with other calm fish of similar size. It can occasionally nip fins, so keep an eye on compatibility when housing it with long-finned species.

  6. 6Provide room to school

    To bring out its natural appeal, it helps to keep a decent-sized group with enough swimming space to school together. Prepare a tank that can comfortably accommodate this before bringing them home.

  7. 7Acclimate carefully

    Even though it's a hardy species, fish can be more sensitive to water changes right after transport. Take time with the acclimation process when bringing them home to ease the transition into their new environment.

Frequently asked questions about Odessa Barb

Q.Is this fish suitable for beginners?
A.Yes, it's considered a beginner-friendly species thanks to its hardiness and tolerance for environmental changes. With basic water quality maintenance, it's approachable even for first-time tropical fish keepers.
Q.How many should be kept together?
A.Keeping a group is preferable to housing just one or two. Because males compete with each other for coloration, a reasonably sized group tends to bring out their fullest colors.
Q.How can I tell males and females apart?
A.Males have a broad red-orange band on the body with black-spotted, edged fins, while females are plainer in color and somewhat deeper-bodied — the difference is usually easy to spot.
Q.Can it be kept with other tropical fish?
A.Being small and generally peaceful, it can usually be kept with other calm fish of similar size. That said, it may nip fins occasionally, so monitor compatibility if pairing with long-finned species.
Q.Are there any CITES restrictions on this species?
A.The Odessa Barb is not listed under CITES. We don't provide definitive information on other regulations here, so please check independently if needed.

Useful tools for Odessa Barb care

💧Aquarium Volume CalculatorCalculate water volume, weight, and heater wattage from tank dimensions🧪Water Quality CheckerFind compatible fish, shrimp, plants & corals based on pH, temperature & hardness🍽️Feeding GuideCheck feeding frequency, portion sizes & supplements by species and growth stage🤝Compatibility CheckerCheck compatibility between two species on a 5-level scale📊Fish Compatibility MatrixCheck fish compatibility at a glance with our matrix chart🔄Nitrogen Cycle GuideAuto-calculate bacteria colonization timeline for new tank cycling🗓️Seasonal Care CalendarMonthly care events and seasonal management tips at a glance🚿Water Change CalculatorAuto-calculate optimal water change frequency and volume by tank size and fish count🐠Stocking CalculatorCalculate max fish capacity for your tank size with overstocking alertsElectricity Cost SimulatorCalculate monthly and annual electricity costs for care equipment with presets🧬Breeding PlannerSelect parent varieties to view breeding schedules and offspring patterns🏞️Tank Layout PlannerGet substrate, plant & hardscape suggestions based on tank size and style🧮Care Cost SimulatorEstimate initial, monthly & annual costs by category, care level and quantity⚖️Species Comparison ToolCompare two species side by side: care difficulty, size, lifespan & temperature🎯Pet Match DiagnosticAnswer 7 questions to find your top 3 perfect pets📋Lifetime Cost SimulatorEstimate lifespan and lifetime costs by species for dogs, cats, reptiles and more🚚Transport Safety CheckerCheck transport safety score and precautions by category, season, method and distance💊Medication Dosage CalculatorCalculate proper medication dosage by body weight and medicine type for fish, reptiles, and small animals⏱️Quarantine & Acclimation TimerManage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species

Learn more about Odessa Barb in the encyclopedia

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Care difficulty, lifespan, size and diet — all basics covered.

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