Before the parasite settles on the intermediate host there are two free swimming or copepodid larval stages , after which it settles on the gill tips of the intermediate host as a sessile chalimus larva .
The intermediate host is usually a flatfish or a cephalopod .
Before the parasite settles on the intermediate flatfish there are two free swimming or copepodid larval stages , after which it settles on the gill tips of the intermediate flatfish as a sessile chalimus larva .
The intermediate host is usually a flatfish or a cephalopod .