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What do hagfishes eat?
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agnathan
Lamprey (Lampetra) on rainbow trout.
Hagfishes are scavengers that primarily locate their food by scent. Their diet consists of soft-bodied invertebrates and larger dead or crippled animals, such as fish.12
When a hagfish detects the scent of a carcass, it leaves its burrow to find the meal and coils around it. Using comblike, horny tooth plates on the floor of the mouth, the hagfish bites into the flesh. In some cases, they attack fish caught in nets or on lines by boring into the body and consuming the animal from the inside.12