Raphidascaris acus

are endoparasites of

• Global Biotic Interactions: Arctodiaptomus salinus (Daday 1885)
• Global Biotic Interactions: Eiseniella tetraedra (Savigny 1826) (Squaretail worm)
• Global Biotic Interactions: Glyptotendipes polytomus
• Global Biotic Interactions: Radix balthica
• Global Biotic Interactions: Chironomus plumosus (Linnaeus 1758) (Buzzer midge)

have host

• Global Biotic Interactions: Esox lucius Linnaeus 1758 (Northern pike)
• Global Biotic Interactions: Micropterus dolomieu Lacepède 1802 (Smallmouth Bass)
• Global Biotic Interactions: Esox lucius Linnaeus 1758 (Northern pike)
• Global Biotic Interactions: Ptychocheilus oregonensis (Richardson 1836) (Northern Pikeminnow)
• Global Biotic Interactions: Perca flavescens (Mitchill 1814) (Yellow Perch)

parasitize

• Global Biotic Interactions: Salmo marmoratus Cuvier 1829 (Marbled trout)
• Global Biotic Interactions: Coregonus albula (Linnaeus 1758) (Vendace)
• Global Biotic Interactions: Thymallus arcticus (Pallas 1776) (Arctic Grayling)
• Global Biotic Interactions: Thymallus arcticus (Pallas 1776) (Arctic Grayling)
• Global Biotic Interactions: Misgurnus fossilis (Linnaeus 1758) (Weatherfish)