Peacock Rainbow Fish

Peacock Rainbow Fish, also known as Praecox Rainbowfish or Dwarf Neon Rainbowfish, is a lively freshwater species prized for its metallic blue sheen and striking reddish fins. This active schooling fish adds constant movement and colour to community aquariums, making it a favourite for hobbyists who want a peaceful yet eye-catching display. It does best when kept in a proper group and in a mature tank with stable water quality.

Because of its energetic swimming style and social nature, Peacock Rainbow Fish suits aquarists who enjoy planted tanks or spacious community setups. Its compact adult size makes it manageable for medium home aquariums, but it still benefits from open swimming space, gentle current, and regular maintenance. When settled, these fish show excellent colour and confident behaviour throughout the day.

Key Features

• Appearance: Slim-bodied rainbowfish with an iridescent blue to neon silver body that flashes beautifully under aquarium lighting.
• Size: Usually sold as a small juvenile; adults generally reach around 5 to 6 cm in length.
• Colors: Bright metallic body with contrasting red, orange, or pinkish fins, especially noticeable in healthy and well-settled specimens.
• Lifespan: With stable water conditions and good care, they may live around 3 to 5 years in captivity.
• Temperament: Peaceful, active, and social; best maintained in groups rather than singly.
• Water Type: Freshwater fish suited to clean, filtered, well-oxygenated aquariums.

Care Requirements

• Tank Size: A tank of at least 60 litres is recommended for a small group, with larger tanks preferred for better schooling behaviour and swimming room.
• Water Parameters: Ideal temperature is around 24 to 28°C with pH between 6.5 and 7.5. Stable conditions are more important than chasing exact numbers.
• Diet: Omnivorous and easy to feed; accepts quality flakes, micro pellets, and occasional treats like daphnia, brine shrimp, or bloodworms.
• Tank Mates: Suitable with other peaceful community fish such as tetras, rasboras, small gouramis, corydoras, and similar non-aggressive species.
• Schooling Need: Best kept in groups of 6 or more to reduce stress and encourage natural movement and colour display.
• Care Tips: Provide plants along the sides and back with open swimming space in the centre. Regular water changes and good filtration help maintain health and colour.

Peacock Rainbow Fish is an excellent choice for aquarists looking for a peaceful schooling fish with strong visual appeal. For best results, add them only to cycled aquariums and avoid housing them with fin-nippers or aggressive tank mates.