Crepidostomum cooperi Hopkins 1932

have host

• Global Biotic Interactions: Perca flavescens (Mitchill 1814) (Yellow Perch)
• Global Biotic Interactions: Lepomis gulosus (Cuvier 1829) (Warmouth)
• Global Biotic Interactions: Lepomis macrochirus Rafinesque 1819 (Bluegill Sunfish)
• Global Biotic Interactions: Oncorhynchus clarkii (Richardson 1836) (cutthroat trout)
• Global Biotic Interactions: Lepomis marginatus (Holbrook 1855) (Dollar Sunfish)

parasitize

• Global Biotic Interactions: Perca flavescens (Mitchill 1814) (Yellow Perch)
• Global Biotic Interactions: Samariscus nielseni Quéro, Hensley & Maugé 1989 (Nielsen's righteye flounder)
• Global Biotic Interactions: Lepomis marginatus (Holbrook 1855) (Dollar Sunfish)
• Global Biotic Interactions: Salvelinus fontinalis (Mitchill 1814) (brook trout)
• Global Biotic Interactions: Percis matsuii Matsubara 1936