Dogfish sharks of the genus Squalus are small, deep-water sharks with a slow rate of molecular evolution that has led to their designation as a series of species complexes, with low between-species diversity relative to other taxa. The largest of these

Reproductive characteristics of the shortspine spurdog, Squalus cf. mitsukurii Jordan and Snyder, 1903, were examined based on specimens collected around Ishigaki Island, Okinawa, Japan. Females reached sexual maturity at a larger size than males (total