Ouka Medaka

Recommended Aquatic Plants for Medaka | Choosing for Biotopes and Indoor Aquariums

Carefully selected aquatic plants for medaka tanks and biotopes from a fish keeper's perspective. From species that serve as spawning beds, hardy species that grow without CO2, to floating plants that become hiding places for fry—this guide explains selection criteria and compatibility.

Aurora Medaka Care Guide | Tank Setup to Bring Out Rainbow Coloration and Breeding/Selection Tips

A detailed guide to Aurora Medaka characteristics and care methods. Covers substrate, lighting, and water quality management to maximize pearl-like iridescent coloration, breeding procedures, and selection criteria for developing vibrant individuals—a practical guide useful for beginners through intermediate keepers.

Mariage Medaka Breeding & Care Guide | Management & Selection Methods to Enhance Lame Coloration

Complete guide to Mariage medaka care and breeding methods. Learn how to maximize the contrast between pure white coloration and lame through lighting, tank, and nutritional management, plus the complete breeding flow from egg-laying through fry care and selection, and easy-to-understand disease prevention tips for beginners.

Satan (Black Medaka) Care Guide | Environmental Settings to Maximize Jet-Black Body Color and Breeding/Selection

A detailed guide to Satan-type medaka care. Covering key points for bringing out jet-black body color through white substrate, white containers, and lighting management—from spawning to fry management and selection criteria for blackness—a practical guide to beautifully maintaining black improved medaka long-term.