This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Anguilla anguilla Linnaeus Fig Matschie et al. .svg en Drawing of the European eel Anguilla anguilla Linnaeus Fig de Zeichnung des Europischen Aals Anguilla anguilla Linnaeus Fig Matschie Reichenow Tornier Pappenheim Mammalia Aves Reptilia Amphibia Pisces In Brauer Hrsg Die Ssswasserfauna Deutschlands Eine Exkursionsfauna