This is an acoustic telemetry dataset published by the Research Institute for Nature and Forest (INBO). It contains animal (fish) tracking data collected by the Permanent Belgian Acoustic Receiver Network <a href=\"https://lifewatch.be/en/fish-acoustic-receiver-network\"> (https://lifewatch.be/en/fish-acoustic-receiver-network)</a> for the project/study 2015_dijle, using VEMCO tags (V7, V13) and receivers (VR2AR, VR2W). In total 26 adult individuals of five local wild fish species (<i>Anguilla anguilla</i>, <i>Cyprinus carpio</i>, <i>Platichthys flesus</i>, <i>Rutilus rutilus</i>, <i>Silurus glanis</i>) were captured, tagged and released in 2015, to study the effect of a specific barrier on their upstream/downstream migration in the Dijle basin.