European eel farming faces unique welfare challenges because eels cannot yet be bred in captivity, meaning all farmed eels begin life as wild-caught glass eels.
Farmed eel welfare presents a double ethical challenge: the farming itself causes welfare concerns, and the sourcing of stock from endangered wild populations raises conservation objections. The welfare problems of eel farming - high density, poor slaughter methods, and limited knowledge of eel sentience and needs - are compounded by the fact that every farmed eel began life as a wild animal removed from a critically endangered population. A truly welfare-conscious approach to eel would be to avoid consumption entirely until sustainable breeding in captivity is achieved and welfare standards improve.