Brown Spiketail Paradisefish (Pseudosphromenus dayi) — > 4,5cm

Overview

Brown Spiketail Paradisefish (Pseudosphromenus dayi) is a beautifully understated, hardy labyrinth fish with fascinating bubble-nesting behavior and a calm, planted-tank appeal. Native to southwestern India, especially slow-moving freshwater habitats in Kerala and nearby regions, this species is prized for its delicate beauty, peaceful nature, and manageable size. Now available for sale UK from Tropical Fish Co, this charming labyrinth fish is ideal for the planted aquarium enthusiast seeking a rare and peaceful species.

Appearance

The Brown Spiketail Paradisefish typically reaches around 4.5 cm in total length, making it a small labyrinth fish. The body is elongated and laterally compressed, with a brown or olive base color marked with subtle iridescent highlights and fine barring. The most distinctive feature is the elongated spike-like extensions on the caudal fin, which give the species its "spiketail" common name. Males are generally more colorful, especially during breeding displays, showing vivid blue and red highlights. Females are more subdued. Healthy specimens have bright, clear eyes and smooth, undamaged scales.

Natural Habitat

In the wild, Pseudosphromenus dayi is native to southwestern India, especially slow-moving freshwater habitats in Kerala and nearby regions. These waters are typically soft, warm, and slightly acidic, with muddy or sandy substrates and dense aquatic vegetation providing cover. Light levels are low due to the forest canopy and overhanging vegetation. The fish spend much of their time among plants and leaf litter, feeding on small invertebrates and using their labyrinth organ to breathe atmospheric air.

Aquarium Setup

A well-planted aquarium of at least 40 litres is recommended for a pair of Brown Spiketail Paradisefish. 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 subdued lighting. Filtration should be gentle, and water flow should be minimal, as labyrinth fish prefer calm water. A tightly fitting lid is essential, as labyrinth fish can jump. Maintain stable, warm water with neutral to slightly acidic pH.

Feeding

The Brown Spiketail Paradisefish is a carnivore and thrives on a varied diet. Offer quality small carnivore pellets, frozen or live foods such as bloodworms, daphnia, brine shrimp, and mosquito larvae daily, with occasional protein-rich prepared foods. Feed twice daily in small amounts to maintain excellent water quality.

Behaviour

This labyrinth fish is semi-aggressive, with males being territorial, especially during breeding. They are best kept in pairs or in a well-planted aquarium with plenty of hiding places. Males will build bubble nests at the surface and guard them aggressively. They spend much of their time exploring the middle and upper levels of the aquarium. Due to their territorial nature, avoid keeping multiple males in small tanks. They can jump if startled, so a tightly fitting lid is essential.

Tank Mates

The Brown Spiketail Paradisefish is suitable for a peaceful community aquarium with other small fish. Good tankmates include small peaceful fish of similar size and snails. Avoid large aggressive fish, fin-nippers, very boisterous species, much smaller fry or shrimp, and other territorial labyrinth fish in cramped tanks.

Breeding

Breeding the Brown Spiketail Paradisefish is achievable with careful preparation. This is a bubble-nesting labyrinth fish. Provide calm water, floating plants, and a quiet breeding tank. The male typically guards the nest and eggs, and the pair should be removed after spawning if necessary.

Why Buy from Tropical Fish Co

Tropical Fish Co is a leading UK aquatics specialist offering rare and beautiful labyrinth fish like the Brown Spiketail Paradisefish 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 unique, specialist species to your collection. Order online today and enjoy fast, reliable delivery across the UK.