Freshwater invertebrates are essential prey for numerous vertebrate species with high welfare needs, making their conservation fundamental to broader welfare goals.
Freshwater invertebrate welfare is an area of genuine uncertainty, but their role as prey for species with clear welfare needs makes their conservation indirectly but strongly welfare-relevant. Otter, kingfisher and wading bird welfare depends on adequate invertebrate prey availability. Pollution events that eliminate invertebrate communities deprive predators of food, causing welfare problems that cascade up the food chain. Restoration of invertebrate communities through water quality improvement and habitat restoration creates the food web foundations supporting the welfare of numerous vertebrate species across multiple trophic levels.