European eels are critically endangered in the wild while increasingly farmed in aquaculture, creating a complex welfare and conservation situation requiring careful management of both wild and farmed populations.
Eel welfare in aquaculture is complicated by their sourcing from critically endangered wild populations. Wild-caught glass eels removed for farming are no longer available to contribute to the wild population recovery. Intensive eel farming at high densities causes chronic stress indicators. The ethical complexity of eel aquaculture combines individual animal welfare concerns with species-level conservation obligations.