noun
Ishikawa's frog
A species of frog (Odorrana ishikawae) endemic to the Ryukyu Islands; a protected species in Japan.
イシカワガエルは沖縄県の天然記念物に指定されている。
Ishikawa's frog is designated as a natural monument of Okinawa Prefecture.
Named after the Japanese biologist Ishikawa Chiyomatsu (石川千代松). The exact derivation is straightforward; the name combines the family name 石川 with 蛙 (frog).