First intermediate host are ram's horn snails.

Bittium is a genus of very small sea snails, marine gastropod molluscs in the family Cerithiidae, the horn snails.

Bulinus hightoni is a species of freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails.

Batillaria mutata is a species of small mudflat saltwater snail, a marine gastropod mollusk in the family Batillariidae, the horn snails.

Batillaria zonalis is a species of small sandy shore snail, a marine gastropod mollusk in the family Batillariidae, the horn snails.

Its lives in three hosts: shorebirds, horn snails, and killifish.

Gyraulus riparius is a species of small freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

Anisus vortex is a species of small freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.

They are aquatic pulmonate gastropod mollusks in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.

They are aquatic pulmonate gastropod mollusks in the family Planorbidae, the ram's horn snails.