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Parosphromenus filamentosus
A licorice gourami of about 4 cm from southeastern Borneo. The male's tail ends in a long central filament framed in black with a thin blue-white edge. It builds a large bubble nest on a cave ceiling.
Parosphromenus filamentosus is a small osphronemid described in 1981 from forest river systems near Banjarmasin, Central Kalimantan, southeastern Borneo; the exact extent of its range is unknown. It reaches about 4-4.5 cm (FishBase; The Parosphromenus Project). The male's caudal fin is pointed with a central filament, brown-red inside with a broad black frame and a thin blue-white edge. It belongs to the group with a long-based dorsal fin and is unlikely to be confused with other licorice gouramis. Large-scale forest destruction has occurred around its habitat, and it is assessed as Endangered on the IUCN Red List. It is regarded as one of the least specialised species of the genus and is recommended even for those new to licorice gouramis. It builds a large foam nest inside a cave and usually lays 50-70 eggs. It appears only occasionally in the international trade, and availability in Japanese specialist shops is limited.
Source: Wikipedia (CC BY-SA 4.0)
The Spiketail gourami grows to About 4-4.5 cm TL (FishBase; The Parosphromenus Project).
The ideal temperature for the Spiketail gourami is 21〜28℃.
Origin
Southeast Asia (southeastern Borneo, Central Kalimantan, Indonesia)
Size
About 4-4.5 cm TL (FishBase; The Parosphromenus Project)
Temperature
21〜28℃
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Not listed in the CITES Appendices (checked on Species+). Assessed as Endangered (EN) on the IUCN Red List. Not regulated under Japan's Invasive Alien Species Act. Never release aquarium fish into the wild.
Sources: Species+ (CITES) / FishBase
Regulations may change. Always verify the latest information with the relevant authorities.
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Carnivore (small live and frozen foods)
21-28°C (FishBase). The Parosphromenus Project describes it as one of the least demanding species in the genus.
Suits a small tank. Provide small caves (clay tubes), leaf litter and plants under dim light, with a lid to prevent jumping.
Small and shy, it is best kept in a species tank where it does not compete for food.
Offer small live or frozen foods such as baby brine shrimp, Daphnia and small bloodworm.
The male carries air repeatedly to build a large foam nest inside a cave and courts head-down. Usually 50-70 eggs, up to about 200.
Seriously threatened by habitat loss in the wild; captive-bred fish are the better choice.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Spiketail gourami is 21〜28℃. Avoid sudden temperature changes and maintain a stable environment.
Spiketail gourami typically reaches About 4-4.5 cm TL (FishBase; The Parosphromenus Project) as an adult. Size may vary depending on care conditions and individual genetics.
Spiketail gourami feeds on: Carnivore (small live and frozen foods). Aim for a balanced diet with appropriate feeding frequency.
The price of Spiketail gourami varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 30, 2026