Peacock Gudgeon (Tateurndina ocellicauda)

Peacock Gudgeon (Tateurndina ocellicauda) is a stunning and peaceful freshwater fish native to Papua New Guinea. Known for its vibrant colors and eye-like tail spot, it’s a favorite among aquarists for both its beauty and manageable care requirements. 

Quick Facts

• Scientific Name: Tateurndina ocellicauda
• Common Names: Peacock Gudgeon, Peacock Goby (misleading, not a true goby)
• Size: 2.5–3 inches (males larger)
• Lifespan: 4–5 years
• Temperament: Peaceful, slightly territorial during breeding
• Care Level: Easy to moderate 

Tank Setup

• Minimum Tank Size: 15 gallons for a small group
• Substrate: Dark sand preferred to enhance coloration
• Decor: Caves, driftwood, and dense plants (e.g., Java fern, Anubias, mosses)
• Lighting: Dim to moderate
• Filtration: Gentle flow; avoid strong currents 

Water Parameters

• Temperature: 72–79°F (22–26°C)
• pH: 6.5–7.5 (slightly acidic to neutral)
• Hardness: 5–12 dKH
• Ammonia/Nitrite: 0 ppm; Nitrate < 20 ppm 

Diet

• Type: Omnivorous with a preference for protein
• Foods:
  • Live/frozen: Bloodworms, brine shrimp, daphnia
  • High-quality pellets or flakes
  • Feed small amounts 2–3 times daily 
• Note: They can be picky eaters—variety helps maintain health and color 

Breeding

• Difficulty: Moderate
• Sexual Dimorphism:
  • Males: Larger, more colorful, nuchal hump
  • Females: Smaller, rounder belly, black fin edges
• Spawning:
  • Use caves or PVC pipes for egg-laying
  • Males guard eggs until hatching (~7–10 days)
  • Fry can be fed infusoria or baby brine shrimp 

Tankmates

• Compatible With:
  • Peaceful community fish (e.g., rasboras, tetras, Corydoras)
  • Dwarf shrimp (with caution—may eat babies)
• Avoid:
  • Aggressive or fin-nipping species
  • Large or overly active fish