Eirmotus octozona 2,5 - (Eirmotus octozona) — 2,5-3cm

Overview

Eight-Banded Barb (Eirmotus octozona) is a small, peaceful Southeast Asian barb with attractive banding that thrives in planted community aquariums. Native to peat swamp and blackwater habitats of Borneo and nearby regions, this species is prized for its delicate beauty, manageable size, and easygoing temperament. Now available for sale UK from Tropical Fish Co, this charming nano barb is ideal for the soft-water enthusiast seeking a peaceful shoaling species.

Appearance

The Eight-Banded Barb is extremely small, typically reaching around 2.5 cm in total length. The body is elongated and silvery, marked with approximately eight vertical dark bands along the flanks, which give the species its common name. The fins are delicate and transparent, often showing subtle hints of color in well-conditioned specimens. Females are generally more robust and slightly paler. Healthy specimens have bright, clear eyes and smooth, undamaged scales.

Natural Habitat

In the wild, Eirmotus octozona inhabits peat swamp and blackwater habitats in Borneo and nearby regions of Southeast Asia. These waters are typically very soft, acidic, and heavily stained with tannins from decomposing leaf litter and peat. The substrate is composed of fine mud and organic matter, and the water is often still or slow-moving, with dense aquatic vegetation providing cover. Light levels are low due to the heavy tannin staining and forest canopy above.

Aquarium Setup

A small, well-planted aquarium of at least 45 litres is recommended for a shoal of Eight-Banded Barbs. Use a fine, dark substrate and incorporate plenty of live plants such as Java moss, Java fern, and Cryptocoryne species, along with floating plants to provide cover and reduce lighting. Add driftwood or dried leaves to replicate the tannin-rich waters of their natural habitat. Filtration should be gentle but effective, and a tightly fitting lid is essential, as small cyprinids can jump. Subdued lighting and minimal water movement will help the fish settle and display their best colors.

Feeding

The Eight-Banded Barb is an omnivore and thrives on a varied diet. Offer high-quality micro pellets or crushed flakes as a staple, supplemented with small frozen or live foods such as daphnia, baby brine shrimp, and microworms. Feed twice daily in small amounts to maintain excellent water quality and prevent overfeeding. A varied, balanced diet will enhance coloration and support breeding condition.

Behaviour

This barb is peaceful, active, and social, constantly on the move and best kept in a shoal of at least six individuals. When kept in proper numbers, the Eight-Banded Barb is confident and displays natural schooling behavior. Solitary specimens may become shy or stressed. Males may engage in mild displays during spawning, but serious aggression is rare. They occupy the middle and upper levels of the aquarium and are most active during feeding time.

Tank Mates

The Eight-Banded Barb is suitable for a peaceful nano or community aquarium with other small fish. Good tankmates include small peaceful rasboras, small tetras, peaceful small loaches, small Corydoras species, and other very peaceful, similarly sized community fish. Avoid large predatory fish, fin-nipping species, aggressive cichlids, large barbs, and very boisterous fast-moving fish.

Breeding

Breeding the Eight-Banded Barb is likely achievable with careful preparation. This is likely an egg-scattering species that may spawn among fine-leaved plants or spawning mops in a separate breeding tank. Condition adults with rich live and frozen foods, and provide soft, clean water. Adults may eat eggs, so a separate breeding tank is recommended. Soft, clean water and live foods can help trigger spawning.

Why Buy from Tropical Fish Co

Tropical Fish Co is a leading UK aquatics specialist offering rare and beautiful nano species like the Eight-Banded Barb direct to your door. Every fish is quarantined, inspected, and dispatched with expert care to ensure it arrives in peak condition. With decades of experience, transparent pricing, and exceptional customer support, we make it easy to add peaceful, attractive species to your collection. Order online today and enjoy fast, reliable delivery across the UK.