Rosy Barb Longfin (Pethia conchonius)

The Rosy Barb Longfin (Pethia conchonius) is a beautiful long-finned variety of the popular Rosy Barb. Featuring elegant flowing fins and a shimmering rosy-red to pink body, this active freshwater fish combines graceful movement with the hardiness that has made Rosy Barbs a favorite among aquarium hobbyists.

Peaceful, social, and easy to care for, Longfin Rosy Barbs thrive in community aquariums, planted tanks, and larger freshwater setups. Their extended fins create a more dramatic appearance while retaining the active schooling behavior of the standard Rosy Barb.

Quick Facts

• Scientific Name: Pethia conchonius
• Common Name: Rosy Barb Longfin, Longfin Rosy Barb
• Adult Size: 4–6 inches
• Temperament: Peaceful
• Care Level: Easy
• Diet: Omnivore
• Lifespan: 5–7 years
• Minimum Tank Size: 30 gallons
• Water Temperature: 72–79°F
• pH Range: 6.5–7.5
• Water Hardness: 5–15 dGH
• Swimming Level: Midwater
• Schooling Fish: Yes

Why Choose Rosy Barb Longfins?

• Elegant flowing fins
• Beautiful rosy-red coloration
• Active schooling behavior
• Hardy and beginner friendly
• Great for community aquariums
• Excellent centerpiece schooling fish

Aquarium Setup

Rosy Barb Longfins appreciate aquariums with plenty of swimming space along with planted areas for cover. Their flowing fins look especially impressive in larger aquariums with moderate water movement.

Recommended setup:

• 30 gallons minimum
• Open swimming areas
• Live plants
• Driftwood and rocks
• Moderate filtration
• School of 6 or more fish

Darker substrates and natural décor often help enhance coloration.

Diet & Feeding

Rosy Barb Longfins are omnivores and readily accept:

• Tropical flakes
• Quality pellets
• Frozen bloodworms
• Brine shrimp
• Daphnia
• Live foods
• Vegetable-based foods

A varied diet helps maintain healthy fins and vibrant coloration.

Tank Mates

Rosy Barb Longfins do well with:

• Cherry Barbs
• Odessa Barbs
• Melon Barbs
• Danios
• Rainbowfish
• Corydoras
• Larger Rasboras
• Peaceful Gouramis
• Loaches

Avoid aggressive fin-nippers that may damage their flowing fins.

Schooling Behavior

Rosy Barb Longfins are social fish and should always be kept in groups.

Recommended group sizes:

• Minimum: 5–6 fish
• Ideal: 8–10+ fish

Keeping them in groups reduces stress and encourages natural behavior.

Frequently Asked Questions

Are Rosy Barb Longfins good for beginners?
Yes. They are hardy, adaptable, and easy to care for, making them an excellent beginner fish.

Should Rosy Barb Longfins be kept in groups?
Yes. Groups of at least 5–6 fish are recommended to encourage schooling behavior and reduce stress.

Are Rosy Barb Longfins safe with live plants?
Generally yes. They may occasionally nibble softer plants, but they typically do well in planted aquariums.

Do Rosy Barb Longfins get along with other fish?
Yes. They are peaceful community fish that do well with similarly sized, active species.

Are Rosy Barb Longfins fin-nippers?
They are far less likely to nip fins than Tiger Barbs and generally behave well when kept in proper groups.

Available at Tropical Treasures Wyo

Shop healthy Rosy Barb Longfins at Tropical Treasures Wyo in Cheyenne, Wyoming. These colorful freshwater schooling fish are perfect for planted aquariums, community tanks, and hobbyists looking for a graceful long-finned barb species.

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