“…This distinction is not always clear, as has been noted for fin cell lines as well (Mauger et al, ). In the fish skin invitrome, epithelioid cell lines have been described from lake sturgeon and mudloach (Vo et al, ; Xu, Sivaramasamy, Jin, Li, & Xiang, ) and fibroblastoid ones, from rainbow trout and Japanese flounder (Ossum, Hoffmann, Vijayan, Holt, & Bols, ; Wang, Zhang, Wang, Wang, & Wang, ). Other skin cell lines from goldfish (Lee, Caldwell, & Gibbons, ), Leopard wrasse (Ma, Sun, Zeng, & Lu, ), red‐spotted grouper (Lei et al, ) and Ussuri catfish (Ou, Lei, He, Zhou, & Zhang, ) have been described as showing both morphologies, with the proportions of cells in cultures having a particular shape changing in complex ways.…”