Ten spotted live-bearer (Cnesterodon decemmaculatus) — 1,5-2cm

Overview

Ten-Spotted Livebearer (Cnesterodon decemmaculatus) is a tiny, peaceful South American livebearer ideal for planted nano aquariums and species-focused community setups. Native to Argentina and Uruguay, this species is prized for its manageable size, hardy nature, and fascinating breeding behavior. Now available for sale UK from Tropical Fish Co, this charming dwarf livebearer is ideal for the nano aquarium enthusiast seeking a peaceful, easy-to-breed species.

Appearance

The Ten-Spotted Livebearer is extremely small, typically reaching around 2 cm in total length. The body is elongated and robust, with a pale silver or olive base color marked with a series of small dark spots along the flanks, giving the species its common name. The fins are delicate and transparent, often showing subtle hints of color in well-conditioned males. Females are generally larger and more robust. Healthy specimens have bright, clear eyes and smooth, undamaged scales.

Natural Habitat

In the wild, Cnesterodon decemmaculatus is native to Argentina and Uruguay, where it inhabits slow-moving streams, ponds, and marshes with dense aquatic vegetation. These waters are typically soft to moderately hard, warm to temperate, and slightly acidic to neutral. The substrate is composed of fine mud or sand, and the fish spend much of their time among plants and cover, feeding on small invertebrates and organic detritus.

Aquarium Setup

A small, well-planted aquarium of at least 60 litres is recommended for a small group of Ten-Spotted Livebearers. Use a fine, dark substrate and incorporate plenty of live plants such as Java moss, Java fern, Cryptocoryne species, and floating plants to provide cover and hiding places. Filtration should be gentle but effective, and a secure lid is advisable. Subdued lighting and minimal water movement will help the fish settle and display their best colors.

Feeding

The Ten-Spotted Livebearer is an omnivore and thrives on a varied small-food diet. Offer quality micro-pellets or flakes as a staple, supplemented with frozen and live foods such as daphnia, brine shrimp, and mosquito larvae. Occasional vegetable matter or algae-based foods will support digestive health. Feed twice daily in small amounts to maintain excellent water quality.

Behaviour

This livebearer is peaceful, active, and social, constantly on the move and best kept in a small group. When kept in proper numbers, the Ten-Spotted Livebearer is confident and displays natural behavior. Males may court females continuously, but serious aggression is rare. They occupy all levels of the aquarium and are most active during the day.

Tank Mates

The Ten-Spotted Livebearer is suitable for a peaceful nano aquarium with other small fish. Good tankmates include other small peaceful fish, dwarf livebearers, and peaceful snails. Avoid large predatory fish, fin-nipping fish, aggressive cichlids, and any fish large enough to eat them.

Breeding

Breeding the Ten-Spotted Livebearer is straightforward. This is a livebearer that will usually breed readily in good conditions. Provide dense planting or fine-leaved cover for fry, and separate adults if you want to raise more young, as they may eat their own fry. Females give birth to free-swimming fry that can be raised on very small live foods.

Why Buy from Tropical Fish Co

Tropical Fish Co is a leading UK aquatics specialist offering rare nano species like the Ten-Spotted Livebearer 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, fascinating species to your collection. Order online today and enjoy fast, reliable delivery across the UK.