Prior to 1900 most native fish were viewed as vital food resources. Fish designated as sport fish today were harvested commercially and shipped by rail to the cities. The results were gravely declining stocks of river and lake fish at a time the U.S. population was greatly expanding. In 1871 Ulysses S. Grant and Congress ordered the formation of the U.S. Fish Commission to oversee the nation's fisheries interests. By 1877 the studies of European fish farming techniques indicated the carp would contribute to the strength of the nation.
By 1874 the commission after long study issued a report entitled "Fishes Especially worthy of Cultivation" It went on to say that no other species except the carp, promises so great a return in limited waters. Cited were advantages over such fish as black bass, trout, grayling and others " because it is a vegetable feeder, and although not disdaining animal matters can live on vegetation alone and can attain large weight kept in small ponds and tanks".
In 1876 the commission enumerated other good qualities such as high fecundity (a count of ripe eggs in the female fish), adaptability to artificial propagation, hardiness of growth, adaptability to environmental conditions unfavorable to equally palatable species, rapid growth, harmlessness in relation to fish of other species, ability to populate waters to it's greatest extent, and fine table qualities. By 1877 citing the above reasons and adding 'there is no reason why time should be lost with less proved fishes' the commission convinced of the value of carp imported 345 fishes of scaled, mirror and leather carp from German aqua culturists. On May 26th they were placed in the Druid Hill Park ponds in Baltimore Maryland. The ponds proved inadequate and some were transferred to the Babcock lakes on the monument lot in Washington, D.C. the following year.

So did they somehow escape from these confines to populate nearly everywhere? No. Now the state governments get involved. Records indicate in 1879, about 6,203 fingerlings were produced in the Babcock Lakes. These were shipped to 273 applicants in 24 states. About 6000 fingerlings were produced in the Druid Hill ponds that year and were stocked primarily in Maryland. One year later, 31,332 carp were shipped to 1,374 applicants. In 1882 carp production increased to 143,696 fish, distributed in small lots to 7,000 applicants. In 1883 about 260,000 carp were sent to 9,872 applicants in 298 of 301 congressional districts and into 1,478 counties. During the years 1879-1896 the US Fish Commission distributed 2.4 million carp, some of which were sent to Canada, Costa Rica, Ecuador and Mexico. By 1897 the Commission discontinued the stocking because carp had been distributed nearly everywhere and many states assumed the task of propagation and stocking of carp.
Al Kowalski.
More US history coming soon.