Reticulated Barb

Adults reach about 5 cm. They have a silvery colour with characteristic rows of irregular vertical stripes alternating with spots. The fins and tail remain translucent. Sexual dimorphism is subtle; males and females look nearly identical. During spawning, females tend to become somewhat larger.

The reticulated barb comes from the island of Kalimantan, one of Southeast Asia's largest islands. It inhabits swamps and associated streams and rivulets that flow through tropical forest shade. The water in these habitats is typically stagnant and rich in tannins from decomposing plant matter, giving it a characteristic brown tint. The bottom substrate varies by location but usually consists of peat, sand, or mud.

Peaceful schooling fish, they mix well with many other species of similar size. Avoid keeping them with overly active or aggressive tank mates. Keep them in a group of at least 8–10 individuals, with both males and females.

For a small school, provide a tank of at least 80 litres. Decorate it with driftwood, dark substrate, and abundant plants, including shade-tolerant and floating species. Use dimmed lighting. Adding dried leaves not only gives the tank a more natural look but also enriches the water with tannins, creating conditions closer to their natural habitat. Stable water conditions and correct chemistry are key. Routine maintenance includes a weekly 20% water change, removal of uneaten food and waste, equipment checks, and monitoring of pH, water dH, and oxidation. Since the reticulated barb lives in streams with weak flow, choose a filter that does not produce strong circulation.

This fish is omnivorous and undemanding with food, readily eating most common feeds. Diet quality and composition affect colour vibrancy and health, so choosing reputable brands is recommended.

There are no reliable records of successful breeding in aquarium conditions. Nothing is documented about spawning behaviour, breeding triggers, or fry-rearing for this species.

In a well-balanced aquarium environment suited to the species, disease is rare. Illness usually results from poor water quality, exposure to sick fish, or physical injury.

When buying, choose active fish with clean fins and no visible scale damage. Check the fish's general condition in the seller's tank: healthy specimens should show interest in food and show no signs of emaciation or abnormal behaviour. Because this species is rarely available, wild-caught fish are common in the trade. Ask the seller about the fish's acclimation period and current diet. Avoid fish that appear lethargic, hide in corners, or show signs of infection, as this species is sensitive to sudden changes in water parameters.