Melanotaenia praecox is a small freshwater rainbowfish native to the Mamberamo River system of Papua, Indonesia, and is widely known in the aquarium hobby as the dwarf neon rainbowfish. This species is especially valued for its bright metallic blue body, lively swimming behavior, and colorful fins, with males often showing stronger red tones while females tend to display softer yellow to orange fin coloration. In aquariums, Melanotaenia praecox is best understood as an active but peaceful schooling fish that benefits from group keeping, open swimming space, stable water quality, and a well-managed community setting where its iridescent coloration and energetic movement can be enjoyed without excessive stress.
毎日更新！業界流通観賞魚図鑑「アクプリ」
