Is Shark, swordfish, king mackerel, Gulf of Mexico tilefish, bigeye tuna, marlin, orange roughy safe during pregnancy?

In short, according to public-health guidance, shark, swordfish, king mackerel, gulf of mexico tilefish, bigeye tuna, marlin, orange roughy is best avoided during pregnancy.

Why

Highest methylmercury levels — FDA/EPA 'Choices to Avoid'; methylmercury can harm a developing brain and nervous system

What to do

avoid entirely; Atlantic tilefish is a separate fish and is a Good Choice

The rest of the guidance

Most people checking one food have two or three more in mind. Here is the whole list, strictest first — each verdict is the same one published on that food's own page.

All alcoholbest avoided
Rare/raw beef, poultry, pork; undercooked eggsbest avoided
Raw alfalfa, clover, radish, mung-bean sproutsbest avoided
Sushi, sashimi, raw shellfish, oysters, cevichebest avoided
Unpasteurized (raw) milk; soft cheeses: brie, camembert, feta, blue, queso frescobest avoided
Unpasteurized/fresh-pressed juices, ciderbest avoided
Albacore (white) tunabest limited
Coffee, tea, cola, energy drinks, chocolatebest limited
Liver, pate, high-dose vitamin A supplementsbest limited
Unwashed fruits and vegetablessafe when washed well
Salmon, sardines, shrimp, pollock, catfish, tilapia, canned light tunaencouraged
Deli/luncheon meats, hot dogs, pate, refrigerated meat spreadssee page

Source: FDA/EPA Advice About Eating Fish (content current as of 03/05/2024).

Educational reference from public health guidance; not medical advice — consult a clinician/pediatrician.