Otofuke River (IMAGE) Hokkaido University Caption A small tributary of the Otofuke river in Hokkaido, Japan. Photos on the left and right were taken on Aug. 14, 2013 and on Jan. 22, 2014 respectively. Credit Koizumi I., Tanaka Y. and Kanazawa Y., Mass immigration of juvenile fishes into a small, once-dried tributary demonstrates the importance of small remnant tributaries as wintering habitats, <i>Ichthyological Research</i>, Dec. 21, 2016. DOI:10.1007/s10228-016-0564-1 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.