As published in "Do Fish Fall from the Sky?" Science vol. 109 page 402,
On October 23, 1947, biologist Alexander Dimitrivitch Bajkov, PhD was eating breakfast with his wife at a restaurant in Marksville, Louisiana when the waitress told them that fish were falling from the sky.
...J. E. Gremillion, and two merchants, E. A. Blanchard and J. M. Blouillette, were struck by falling fish as they walked to their places of business at 7:45 am. There were spots in the vicinity of the bank (a half block from the restaurant) averaging one fish per square yard. Automobiles and trucks were running over them. Fish also fell on roofs of houses.
They were freshwater fish native to local waters, and
belonging to the following species: Large-mouth black
bass (Micropterus salmoides), goggle-eye (Chaenobryttuis
coronarius), two species of sunfish (Lepomis), several
species of minnows and hickory shad (Pomolobuts medfocris).
The latter species were the most common. I [Bajkov] personally collected from Main Street and several yards on Monroe Street, a large jar of perfect specimens, and
preserved them in Formalin, in order to distribute them
among various museums...
The fish that fell in Marksville were absolutely fresh,
and were fit for human consumption. The area in which
they fell was approximately 1,000 feet long and about 75
or 80 feet wide, extending in a north-southerly direction,
and was covered unevenly by fish. The actual falling of
the fish occurred in somewhat short intervals, during
foggy and comparatively calm weather. The velocity of
the wind on the ground did not exceed eight miles per
hour. The New Orleans weather bureau had no report of any large tornado, or updrift, in the vicinity of Marksille at that time. However, James Nelson Gowanloch,
chief biologist for the Louisiana Department of Wild
Life and Fisheries, and I had noticed the presence of
numerous small tornadoes, or "devil dusters" the day
before the "rain of fish " in Marksville. Fish rains have
nearly always been described as being accompanied by
violent thunderstorms and heavy rains. This, however,
was not the case in Marksville...
Bajkov goes on to refer to the work of E.W. Gudger who published four articles describing 78 instances of fish falling from the sky, and concludes:
There is no reason for anyone to devaluate the scientific
evidence. Many people have never seen tornadoes, but
they do not doubt them, and they accept the fact that
wind can lift and carry heavy objects. Why can 't fish be
lifted with water and carried by the whirlwind?
An example of the Gudger's work to which Bajkov refers is:
More Rains of Fishes Journal of Natural History Series 10, vol. 3, pages 1-26. Gudger's title is given as associate of ichthyology, American Museum of Natural History.
This article was a follow up on Grudger's Rains of Fishes Journal of the American Museum of Natural History vol. 21, pages 607-619
Time Magazine 17 November 1947 reported the fish falling in Marksville with only one sentence:
Law of Compensation: In Marksville, La., hundreds of little fish inexplicably fell from the sky on poultryless Thursday.
See also the United States Fish and Wildlife Service publication Rains of Fishes for more fish falling events and references.