Syngnathus leptorhynchus Girard 1854

are host of

• Global Biotic Interactions: Gyrodactylus leptorhnchi
• Global Biotic Interactions: Gyrodactylus leptorhnchi

are parasitized by

• Global Biotic Interactions: Microcotyle sebastis Goto 1894
• Global Biotic Interactions: Gyrodactylus shorti Holliman 1963
• Global Biotic Interactions: Gyrodactylus leptorhnchi
• Global Biotic Interactions: Pseudodelphis oligocotti
• Global Biotic Interactions: Podocotyle sinusacca Ching 1960

are preyed upon by

• Global Biotic Interactions: Sterna elegans
• Global Biotic Interactions: Sterna caspia
• Global Biotic Interactions: Sterna maxima
• Global Biotic Interactions: Nycticorax nycticorax (Linnaeus 1758) (Ноќна чапја)
• Global Biotic Interactions: Numenius americanus Bechstein 1812

eat

• Global Biotic Interactions: Euhaplorchis californiensis
• Global Biotic Interactions: Catatropis johnstoni Martin 1956
• Global Biotic Interactions: Parorchis acanthus (Nicoll)
• Global Biotic Interactions: Hysterolecitha trilocalis King & Noble 1961
• Global Biotic Interactions: Acanthoparyphium spinulosum

have endoparasite

• Global Biotic Interactions: Pseudodelphis oligocotti

prey on

• Global Biotic Interactions: Capitella capitata (Fabricius 1780)
• Global Biotic Interactions: Mytilus galloprovincialis Lamarck 1819
• Global Biotic Interactions: Neanthes arenaceodentata (Moore 1903)
• Global Biotic Interactions: Cirriformia spirabrancha (Moore 1904)