The Pacific sanddab (Citharichthys sordidus) is a species of flatfish. It is by far the most common sanddab, and it shares its habitat with the longfin sanddab (C. xanthostigma) and the speckled sanddab (C. stigmaeus). It is a medium-sized flatfish, with a light brown color mottled brown or black, occasionally with white or orange spots.The Pacific sanddab is endemic to the northern Pacific Ocean, from the Sea of Japan to the coast of California.