USFC "Fish Hawk" was a fisheries research ship operated by the United States Commission of Fish and Fisheries and its successor, the United States Bureau of Fisheries, from 1880 to 1926. She was the first large ship purpose-built by any country for the promotion of fisheries, and spent her 46-year career operating along the United States East Coast, in the Gulf of Mexico, and off Puerto Rico.
The USFC "Fish Hawk" began operating in the second last decade of the 19th century, and was out of operation some time in the third decade of the 20th century. 