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.
Canned tuna along with Mahi Mahi, fresh water salmon, cod, pollack, blue crab, catfish, lake whitefish, are safe only once a month. Things like tuna steaks, seabass, oysters, marlin, halibut, pike, walleye, white croaker, and largemouth bass, should NEVER be eaten during pregnancy. The safe options as long as you don't overdue it are trout, farmed catfish, shrimp, fish sticks, flounder, saltwater salmon, croaker, and haddock.