Add a splash of vibrant color to your aquarium with the Peacock Gudgeon (Tateurndina ocellicauda), a stunning freshwater species prized for its iridescent blue body, yellow fins, and striking red markings. Native to Papua New Guinea, this small yet dazzling fish grows up to 7.5 cm (3 inches) as an adult but is often sold at 3–4 cm, making it an excellent choice for both nano and mid-sized aquariums.

Key Features

• Size: 3–4 cm (juvenile), up to 7.5 cm adult

• Temperament: Peaceful, slightly territorial during breeding

• Care Level: Easy to Moderate

• Lifespan: 4–5 years under good care

Care Guide for Peacock Gudgeon

✅ Tank Requirements

• Minimum Tank Size: 15–20 gallons for a pair or small group

• Aquascape: Provide plenty of plants, caves, and driftwood for hiding and breeding

• Substrate: Sand or fine gravel works best

• Lighting: Moderate lighting enhances their vibrant colors

• Cover: Tight-fitting lid (they can jump!)

✅ Water Parameters

• Temperature: 22°C – 28°C (72°F – 82°F)

• pH Level: 6.5 – 7.5

• Water Hardness: 5 – 12 dGH

• Filtration: Gentle flow with excellent water quality

Perform regular 25–30% water changes weekly to keep conditions stable.

✅ Feeding Habits

Peacock Gudgeons are omnivorous with a preference for protein-rich foods.

• Recommended Diet:

  • High-quality sinking micro-pellets

  • Live or frozen brine shrimp, daphnia, and bloodworms

  • Occasional flakes and freeze-dried treats

Feed small portions twice daily to avoid leftovers and maintain water quality.

✅ Tank Mates

Peacock Gudgeons are generally peaceful, making them ideal for community aquariums. However, they can be mildly territorial during breeding.

Best Tank Mates:

• Small tetras (e.g., Neon, Ember)

• Rasboras

• Corydoras catfish

• Small peaceful gouramis

• Shrimp (with caution – may eat very small shrimp)

Avoid aggressive or fin-nipping species.

✅ Behavior & Breeding

• Behavior: Active, playful, and often seen swimming near the bottom and mid-water.

• Breeding: Peacock Gudgeons are cave spawners. Males develop bright colors and guard the eggs in a cave or hollow structure. After hatching, feed fry with infusoria or baby brine shrimp.

Why Choose Peacock Gudgeon?

• Striking colors that brighten any aquarium

• Peaceful temperament, ideal for planted community tanks

• Hardy and adaptable, great for hobbyists of all levels

• Interesting breeding behavior for aquarists who love challenges

✅ Perfect for planted tanks, aquascapes, and community setups
✅ Adds color, activity, and unique personality to your aquarium