A wheelwright is  a craftsman who builds or repairs wooden wheels. The word is the combination of wheel and the archaic word wright, which comes from the Old English word wryhta, meaning a worker or maker.
It is advisable not to eat mercury-rich fish such as these during pregnancy.. Look out for fish that taste especially metallic, a sign of high mercury levels. Medium-mercury fish include Chilean sea bass, grouper, cod, Mahi Mahi, monkfish, and snapper. Low-mercury fish are the safest for pregnant women.
Fish that has been salted or pickled is safe to eat. If you enjoy oysters, mussels and other shellfish, you'll need to make sure that they're well cooked if you want to keep eating them during pregnancy. Raw shellfish may be contaminated with harmful bacteria and viruses that can cause food poisoning.