Blood worm

Blood worm or bloodworm is an ambiguous term and can refer to:

• The larvae of a non-biting midge (Family Chironomidae) containing hemoglobin
• The polychaete Glycera, often used for fishing bait
• Species of the Polychaeta subclass Scolecida.
• Lumbriculus variegatus, more commonly called blackworm, but often misnamed by pet stores
• Strongylus vulgaris, also known as the fishing or night-crawler worm, a common horse parasite
• Angiostrongylus cantonensis, a parasitic nematode that causes of Angiostrongyliasis and the most common cause of eosinophilic meningitis