Eh, belt fish boleh je makan during pregnancy, no worries! Mostly fish is safe, but generally we avoid the high-mercury ones like shark, swordfish, and king mackerel, a few of my mum friends just stick to salmon, tilapia, and mackerel sebab aman and kaya nutrients. Best thing is let your wife's gynae confirm exact preferences, especially kalau she has any specific health conditions, tapi overall most fish is good for baby's brain development so don't worry too much!