Movement range and behavior of mandarin fish (Siniperca scherzeri) and catfish (Parasilurus asotus) in Chungju Lake

Abstract

) with acoustic telemetrymethod in Chungju Lake, Korea. Mandarin fish tended to stay within 1km from the release points indownstream, and had a strong diurnal behavior. They approached to the lakefront at night. They alsopreferred to stay at deep water off the lakefront. The average swimming speed was faster at night (0.4BL/s)than during a day (0.2BL/s). They swam the shallow water area at night. Catfish frequently moved betweenupstream and downstream. Catfish tended to act during a day. The average swimming speed was fasterduring a day (0.3BL/s) than at night (0.2 BL/s). The average swimming depth was 14.3m, and they tended tofloat about 4m during a day.Keywords: Acoustic telemetry,