After ingestion by a suitable freshwater crustacean such as a copepod ( the first intermediate host ), the coracidia develop into procercoid larvae.
2.
Annelids eat the eggs, where they hatch into oncosphere larvae that move through intestinal wall and become procercoid larvae in the body cavity.
3.
Following ingestion of the copepod by a suitable second intermediate host, typically a minnow or other small freshwater fish, the procercoid larvae are released from the crustacean and migrate into the fish's flesh where they develop into a plerocercoid larvae ( sparganum ).
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