In case of making distinctions of species in fresh fish markets, roes of Walleye pollack are called sukeso-no-ko (or sukeso-ko) and roes of Pacific cod are called madara-no-ko.
鮮魚市場で特に区別するときには、スケトウダラの子をすけそうの子（助そ子）、マダラの子をマダラの子と呼ぶ。