Blue Beauty/Melanotaenia lacustris
The upper side of the body is blue, and the lower side is silvery white with a hint of yellow. It is a relatively rare species of rainbow fish. Its body color changes with the environment or the angle of the light, making it a dreamlike mermaid .
Adult size: 10CM
Breeding water temperature: above 22℃
Food: Feed red worms brine shrimp
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