Peacock Gudgeon (Tateurndina ocellicauda) – A Complete Care Guide

Latin Name: Tateurndina ocellicauda
Common Names: Peacock Gudgeon, Peacock Goby

The Peacock Gudgeon is a striking freshwater fish known for its vibrant colors and peaceful nature. Native to the slow-moving waters of Papua New Guinea, this fish has become a favorite among aquarists due to its unique appearance and ease of care. Its small size and vibrant coloration make it an excellent addition to community tanks, especially those with plants. In this guide, we will explore the natural habitat, care requirements, and breeding tips for the Peacock Gudgeon.

Peacock Gudgeons in the Wild

Peacock Gudgeons are native to the rainforests and streams of Papua New Guinea, where they inhabit slow-moving rivers, creeks, and lakes. The waters they live in are typically soft and slightly acidic, with plenty of plants and submerged wood that create an ideal environment for these small, colorful fish to hide and hunt.

In the wild, Peacock Gudgeons are carnivores, feeding on small invertebrates, insect larvae, and tiny crustaceans. The slow-moving water and abundance of plants allow them to thrive, using the dense cover for protection from predators and as a hunting ground for food.

Appearance and Behavior

The Peacock Gudgeon is one of the most visually appealing fish available to hobbyists. Males are especially vibrant, sporting a mix of bright blue, yellow, and red patterns, with black markings near their fins and a striking eyespot (ocellus) near the tail, which gives them their name. Females are slightly less colorful but still feature the same basic pattern, with more subdued hues.

These fish are peaceful and sociable, preferring to be kept in small groups of 4 to 6 individuals. Males can show territorial behavior, particularly during spawning, but are generally non-aggressive. They tend to occupy the middle and bottom levels of the tank, frequently exploring the substrate and hiding among plants.

Aquarium Care for Peacock Gudgeons

Peacock Gudgeons are relatively easy to care for, making them a suitable choice for both beginner and experienced aquarists. With the right tank setup and water conditions, they can thrive and even breed in captivity.

Tank Setup

• Tank Size: A 15- to 20-gallon tank is recommended for a small group of Peacock Gudgeons. The larger the tank, the more room they have to establish territories and reduce aggression during breeding.
• Water Temperature: These fish prefer a temperature range of 72°F to 78°F (22°C to 26°C).
• Water Parameters: Maintain a pH between 6.0 and 7.5, with soft to moderately hard water. Peacock Gudgeons prefer slightly acidic water, but they are adaptable to a wide range of water conditions as long as stability is maintained.
• Filtration: Use a gentle filter, such as a sponge or low-flow hang-on-back filter. Too much water movement can stress these fish, as they are accustomed to calmer waters.
• Aquascaping: A well-planted tank with driftwood and caves will mimic their natural habitat. Floating plants or dense vegetation will provide the shade and hiding spots that Peacock Gudgeons appreciate. Additionally, caves or hollow decorations are essential for breeding.

Feeding

In their natural habitat, Peacock Gudgeons are carnivores, primarily eating small invertebrates. In captivity, they accept a variety of foods, but a diet rich in protein will help them maintain vibrant coloration and health.

• Staple Diet: High-quality micro-pellets or small sinking pellets are suitable for daily feeding.
• Supplemental Food: To mimic their natural diet, offer live or frozen foods such as bloodworms, brine shrimp, daphnia, or tubifex worms. These foods will not only keep them healthy but also bring out their best colors.
• Feeding Frequency: Feed them once or twice a day, giving only what they can consume in a few minutes.

Tank Mates

Peacock Gudgeons are peaceful fish that do well in community tanks with other small, non-aggressive species. Good tank mates include:

• Small tetras (such as Neon Tetras)
• Rasboras
• Corydoras catfish
• Dwarf shrimp
• Other peaceful gobies or livebearers

Avoid housing them with large or aggressive species that might bully or outcompete them for food.

Breeding Peacock Gudgeons

Breeding Peacock Gudgeons is relatively easy, especially in a well-planted aquarium with appropriate hiding places. They are cave spawners, with males guarding the eggs until they hatch.

• Breeding Tank: A dedicated breeding tank of about 10 to 15 gallons is recommended, with plenty of hiding spots, caves, and plant cover. Use soft, slightly acidic water, and keep the temperature between 75°F and 78°F (24°C to 26°C).
• Spawning Behavior: Males will court females by displaying bright colors and performing a series of movements around their chosen cave. After spawning, the female lays eggs inside the cave or hidden spot, and the male takes over by guarding and fanning the eggs to keep them oxygenated.
• Caring for Fry: The eggs hatch in about 4 to 7 days, depending on temperature. Once the fry are free-swimming, they can be fed infusoria or liquid fry food, transitioning to baby brine shrimp as they grow. It’s important to separate the fry from the adults, as they may get eaten if left in the same tank.

Conclusion

The Peacock Gudgeon is a stunning, peaceful species that adds color and interest to any community or species-specific aquarium. Their unique colors, coupled with their curious, active nature, make them a joy to watch. With proper care, including a planted tank, high-quality diet, and stable water conditions, these fish will thrive and may even reward you with successful breeding. Whether you're a beginner or experienced aquarist, the Peacock Gudgeon is a fantastic choice for bringing life and vibrancy to your tank.