Fig. 5From: To each his own: no evidence of gyrodactylid parasite host switches from invasive poeciliid fishes to Goodea atripinnis Jordan (Cyprinodontiformes: Goodeidae), the most dominant endemic freshwater goodeid fish in the Mexican HighlandsHamulus complex, including dorsal and ventral bars of different species of Gyrodactylus von Nordmann, 1832 infecting poeciliid fishes. The hamulus complex of Gyrodactylus tomahuac n. sp., a parasite of the goodeid fish Goodea atripinnis is shown for comparison. Scale-bar: 10 μmBack to article page