Fatty marine fish such as salmon are good for omega-3 fatty acids. Domestic fish from cold water such as trout are also suitable. This is good for the child's development. Sea fish are also an important source of iodine. There is even evidence that eating fish during pregnancy can protect against allergic diseases in the child. It is advisable to eat fish 1-2 times a week.

During pregnancy, you should avoid predatory fish that may contain heavy metals. These include
- Tuna
- Swordfish
- Heil-Butt
- Pike
- Butter-Fish
- Snapper
- Shark
- Marlin
- King mackerel
- Butter mackerel
- Snake mackerel

You should avoid the following during pregnancy:
- Raw fish like sushi
- Raw seafood such as oysters

You should not eat these foods. You should also avoid smoked and pickled fish such as smoked salmon, smoked trout or gravad salmon during pregnancy to protect yourself from a possible infection with bacteria.