Species Overview
The Red Glass Barb (Pethia conchonius) is a colorful, active freshwater barb prized for its translucent appearance and warm red to rosy coloration. Closely associated with the familiar Rosy Barb, this selectively bred aquarium form combines the energetic schooling behavior that makes barbs so enjoyable to watch with a distinctive lighter-bodied appearance that allows flashes of red, silver, and iridescence to stand out as the fish move through the aquarium. Mature males generally develop the strongest coloration, particularly when comfortable and displaying among other members of their group.
Physical Characteristics
Red Glass Barbs have a slender, streamlined body with a translucent quality that enhances their vibrant color patterns. The body is typically silvery with distinct red or rosy hues, especially on the fins and dorsal area. The fins often display iridescent edges, adding to their visual appeal in a well-lit tank.
Behavior and Habitat
These fish are highly social and thrive in groups of at least 6. They are active swimmers and prefer open areas of the tank where they can dart and school together. They do best in a well-planted, medium to large aquarium with gentle water flow and a stable temperature between 22–28°C.
| Parameter | Value |
|---|---|
| Size (adult) | 3–4 cm |
| Water Temperature | 22–28°C |
| Water pH | 6.0–7.5 |
| Hardness (GH) | 3–8 dGH |
| Group Size | 6 or more |
FAQ
What is the difference between Red Glass Barb and Rosy Barb?
Red Glass Barb (Pethia conchonius) is a selectively bred form of the Rosy Barb with a more translucent body and enhanced iridescence. While both share similar coloration and behavior, the Red Glass Barb has a lighter body that allows red and silver flashes to be more visible as it moves through the water.
How many fish should I keep in a tank?
Red Glass Barbs are social fish and should be kept in groups of at least 6 to ensure they feel comfortable and display their natural behaviors.
Do they require special lighting?
While not strictly dependent on lighting, Red Glass Barbs look best in a well-lit aquarium where their translucent body and iridescent colors can be fully appreciated.
Melanie Langdon –
I bought a group of Red Glass Barbs for my 60-liter tank. They are very active and form a beautiful school. The red and silver flashes are stunning, especially in the evening light. They seem to enjoy the plants and swim freely without stress. A great addition to any community tank.
Frank Lyman –
The fish arrived healthy and were already active in the tank. I kept them in a group of 8 and they swim together in a coordinated pattern. The coloration is vibrant, especially when the light hits the sides of the tank. I’d recommend them to anyone looking for lively, colorful barbs.
Nathan Hamilton –
After a few weeks, the males have developed strong red tones, especially during the day. The tank feels more dynamic with their movement. They don’t eat much but are always active. I love the way they interact with each other and the environment.