In situ evaluation of European eel counts and length estimates accuracy from an acoustic camera (ARIS)Raphaël Lagarde, Jason Peyre, Elsa Amilhat, Manon Mercader, François Prellwitz, Gaël Simon and Elisabeth FaliexKnowl. Manag. Aquat. Ecosyst., 421 (2020) 44DOI: https://doi.org/10.1051/kmae/2020037