TOKYO - Rice fish, the small freshwater fish known as "medaka" in Japanese, are becoming increasingly popular these days as the pet boom continues across Japan.
A colorful pair of male and female rice fish produced through selective breeding go for at least 2,000 yen ($15) and sometimes more than 3,000 yen -- a stunning increase from the days they cost a fraction of that and were only to be found in a far corner of the tropical fish section.
