Keeping close to the river, shore, and surface: the first marine migration of brown trout (Salmo trutta) and Arctic charr (Salvelinus alpinus) post-smolts.
Acoustic telemetry was utilized to track 49 brown trout (Salmo trutta) and 37 Arctic charr (Salvelinus alpinus) first-time migrants of wild origin (post-smolts; mean LF : 169 and 172?mm) in a large fjord in northern Norway. The Salmo trutta were registered at sea for more than twice the time of the Salvelinus alpinus (medians of 54 and 22?days, respectively). Both species were mostly detected near river mouths (>80% of detections), and almost exclusively spent their time (>95%) within the interior 18 km of the fjord. They were surface oriented, with most detections at