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:
Silurus glanis Linnaeus Fig Matschie et al. .svg en Drawing of the Wels catfish Silurus glanis Linnaeus Fig de Zeichnung des Europischen Welses Silurus glanis Linnaeus Fig Matschie Reichenow Tornier Pappenheim Mammalia Aves Reptilia Amphibia Pisces In Brauer Hrsg Die Ssswasserfauna Deutschlands Eine Exkursionsfauna Heft Gustav