Medaka Variety Selection & Outdoor Keeping Guide — Popular Breeds to Breeding Basics

Choosing Medaka Varieties——Which One Should You Get?

There are now hundreds of medaka varieties in existence, and it's common to hear "I don't know which one to choose." Each variety possesses different charms——beautiful body coloration, fin shape, and radiance (sparkle). Here we introduce particularly popular varieties.

Miyuki Medaka

A variety characterized by "body radiance" that shines along the back of the body. Depending on how the light passes through, there are various grades such as full-body and half-body versions. The white or blue-white body with silver light running through it is extremely beautiful, making it one of the most popular starter varieties. The price range is approximately 300-2,000 yen per pair, making it easy to obtain and ideal as a first variety medaka.

Sparkle Medaka

A group of varieties with glittering sparkles (scale radiance) scattered across the entire body. "Black Diamond," "Sapphire," and "Orochi" are particularly popular among black sparkle varieties, with the density of sparkles tending to increase the price. Swimming in summer sunlight is especially striking, and they pair exceptionally well with outdoor cultivation.

Yōkihi Medaka

A classic variety loved for a long time, distinguished by vibrant scarlet-red and orange body coloration. When cultivated outdoors with sunlight exposure, the body color develops a deeper hue. Hardy with strong reproductive capacity, it is one of the least demanding varieties for beginners.

Sanshoku (Three-Color) Medaka

A variety where white, red, and black blend together like koi fish. The expression of the three colors varies greatly among individuals, with siblings displaying completely different patterns, combining collectibility with the joy of cultivation. Selection is difficult and considered suitable for intermediate to advanced keepers, though in recent years relatively stable three-color individuals have become more common.

Daruma Medaka

A variety with a distinctly rounded, squat body shape. Due to their short form, their swimming is unique and endearing, providing relaxation simply from watching. However, due to their body type, they struggle to swim, and strong water currents are prohibited. Water temperature management also requires attention (Daruma body shape is more likely to develop at high water temperatures of 28℃ or above).