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About the Licorice Gourami
The Licorice Gourami is one of the most beautiful and sought-after nano fish in the aquarium hobby. Native to the blackwater peat swamps and slow-moving forest streams of Southeast Asia, this tiny labyrinth fish is renowned for its stunning iridescent blue, red, and black colouration, particularly in mature males during breeding displays.
Although small in size, Licorice Gouramis are full of personality and are best suited to heavily planted or blackwater aquariums with soft, acidic water. Floating plants, driftwood, leaf litter, and subdued lighting help recreate their natural habitat and encourage their vibrant colours. Due to their shy nature, they are best kept either in a species-only aquarium or with other very peaceful nano fish.
Licorice Gouramis feed primarily on small live and frozen foods such as baby brine shrimp, daphnia, microworms, and mosquito larvae. While some captive-bred specimens may accept high-quality micro pellets, they thrive on a varied protein-rich diet.
With their incredible colours and fascinating behaviour, Licorice Gouramis are a rewarding species for dedicated aquarists looking to keep one of the hobby's most unique nano fish.
Quick Care Guide
Scientific Name
Parosphromenus deissneri
Common Name
Licorice Gourami
Origin
Indonesia (Bangka Island)
Adult Size
3–4 cm
Temperament
Peaceful and shy
Diet
Carnivore
Minimum Tank Size
30 Litres
Temperature
24–28°C
pH
4.0–6.5
Water Hardness
0–5 dGH
Difficulty
Advanced
Lifespan
3–5 Years
Suitable For
Blackwater aquariums, nano aquariums, and species-only tanks
Frequently Asked Questions
Are Licorice Gouramis suitable for beginners?
No. They require very soft, acidic water and are best suited to experienced aquarists familiar with blackwater aquarium setups.
What do Licorice Gouramis eat?
They prefer live and frozen foods such as baby brine shrimp, daphnia, microworms, mosquito larvae, and cyclops. Some captive-bred fish will also accept quality micro pellets.
Can Licorice Gouramis live with other fish?
Yes, but only with very small, peaceful species that won't outcompete them for food. Many keepers prefer species-only aquariums.
Do Licorice Gouramis need blackwater conditions?
While not always essential for captive-bred fish, they display their best colours and behaviour in soft, acidic blackwater aquariums rich in botanicals.
Why are my Licorice Gouramis hiding?
This is completely normal. They are naturally shy fish that feel most secure amongst dense plants, leaf litter, and driftwood.
Common Mistakes
Keeping them in hard, alkaline water
Licorice Gouramis require very soft, acidic water to thrive and remain healthy.
Housing with active community fish
Faster species often outcompete them for food and cause unnecessary stress.
Feeding only dry foods
Most specimens require live or frozen foods, particularly when first introduced.
Bright lighting
Subdued lighting and floating plants help these fish feel secure and display their best colours.
Lack of hiding places
Dense vegetation, driftwood, caves, and leaf litter are essential for reducing stress and encouraging natural behaviour.
