Species Highlight Size: 5–6 cm Temperament: Peaceful, active schooling fish Origin: Papua New Guinea Appearance: Bright blue eyes, yellow forked tail, and black-edged fins Tank Role: Mid–upper water swimmer Special Feature: Constantly flashing fins and eyes make them one of the most eye-catching nano rainbowfish Fun Facts Males display continuously, even outside breeding, making the tank look alive with movement. Their bright blue eyes reflect light, giving them their “blue-eye” name. Colors intensify in groups with more females than males. Care Recommendations Group size: 6–8+ (ratio of 1 male to 2–3 females) Tank size: 20 gallons+ Diet: Micro pellets, baby brine shrimp, daphnia, frozen foods Aquascape: Plants with open swimming areas and gentle flow Tankmates: Rasboras, small tetras, Corydoras, other peaceful nano fish Water parameters: Soft to neutral water; stable and well-filtered
