Should be cooked first. Even freshwater fish as well. Since there are many fluke like shrimp. The fish will be a tick or should not eat. The fish louse useless. No nutritional value.
However, it should be cooked first. Even fresh water fish, as well as with a large number of shrimp-like pathology. Tick (bloodsucking insect) is whether or not the fish should not be eaten. Because there are no useless fish tick (bloodsucking insect) nutrition.
It should be cooked first. Even freshwater fish, as well as a number of pathology like shrimp and fish don't know it or not, it is not to be eaten, because it is of no use without damaging hail fish nutritional value.