Fire Tail Gudgeon

The Firetail Gudgeon (Hypseleotris galii) is a small, native Australian freshwater fish widely found in slow-moving streams, ponds, and wetlands along the eastern coastline, from Queensland to northern New South Wales. Known for its vibrant reddish-orange tail and peaceful temperament, the Firetail Gudgeon is a popular choice for native aquariums and community tanks. It thrives in well-planted setups and adapts easily to various water conditions, making it suitable for both beginners and experienced aquarists. Males often display brighter colouring and more territorial behaviour during breeding seasons. Features of Hypseleotris galii Firetail Gudgeon Grows up to 6–7 cm in length Distinctive red or orange caudal fin, especially in males Semi-transparent body with light brown to olive tones Lifespan of up to 3 years in captivity Generally peaceful but may display mild territoriality when breeding Found in freshwater and slightly brackish habitats Tolerates a wide range of temperatures and pH levels The best aquarium size for Hypseleotris galii Firetail Gudgeon A minimum aquarium size of 60 litres is recommended for a small group of 4–6 individuals. Larger tanks allow for natural social dynamics and reduce stress, particularly when housing with other species or creating a breeding environment. Tank Mate Compatibility for Hypseleotris galii Firetail Gudgeon Pacific Blue-Eye Empire Gudgeon White Cloud Mountain Minnow Australian Rainbowfish (smaller species) Bristlenose Catfish Diet for Hypseleotris galii Firetail Gudgeon The Firetail Gudgeon is omnivorous, feeding on small aquatic invertebrates, algae, and organic detritus in the wild. In aquariums, provide a varied diet of high-quality micro pellets, crushed flakes, live or frozen foods such as brine shrimp, daphnia, and bloodworms. Occasional plant-based supplements improve digestion and colouration. Aquarium Setup Hypseleotris galii Firetail Gudgeon Aquarium Filtration Use a gentle filter with adjustable flow to replicate slow-moving waters. Sponge filters or internal filters with low current are ideal, ensuring oxygenation without disturbing substrate or plants. Aquarium Plants Thick vegetation with native or hardy species like Vallisneria, Hornwort, or Water Sprite offers cover and enhances natural behaviour. Floating plants can help diffuse light and reduce stress. Aquarium Lighting Low to moderate lighting suits the Firetail Gudgeon's preference for shaded, vegetated environments. LED systems with adjustable intensity are suitable to balance plant growth and fish comfort. Aquarium Heating Maintain a temperature range between 20–26°C. The species is tolerant of seasonal temperature shifts, making it ideal for unheated indoor aquariums in temperate climates. Aquarium Substrate Use fine sand or smooth gravel to replicate natural creek beds. A dark substrate helps highlight the fire-red caudal fin and encourages more confident behaviour. Aquarium Decorations Incorporate smooth rocks, driftwood, and leaf litter to provide hiding spots and territorial boundaries. Avoid sharp objects and ensure all décor is inert and aquarium-safe.