ANSWERS
Did you spot them all?

n°1: Apatemon sp. (eye fluke)





n°2: Argulus sp. (fish louse)





n°3: Cyathocotilidae gen. sp. (cyst)





n°4: Diplostomum sp. (eye fluke)





n°5: Apatemon sp. (eye fluke)





n°6: Schistocephalus solidus (tapeworm)