Fish Showers

Earlier this year in Tampico, Mexico it rained fish. During a thunderstorm, fish began falling from the sky and landing at the feet of townpeople. The fish were small, only a few grams each, but were still startling changes from what the people of Tampico were used to.

Although this is a weird phenomena, there are multiple cases of this happening in other places.  In many cases the fish, and sometimes frogs, were sucked up by strong winds, usually from tornadoes or hurricanes, and moved other places where they fell from the sky. In other cases, tornadic waterspouts are thought to be the causes of raining fish. These waterspouts consist of a low-pressure central vortex surrounded by a rotating funnel of updrafts, the central vortex is strong enough to suck up water and small objects like a vacuum. When the waterspout loses energy, the things it is carrying are deposited back onto the earth.

https://www.loc.gov/rr/scitech/mysteries/rainingfrogs.html

http://www.npr.org/sections/thetwo-way/2017/09/28/554242564/it-rained-fish-in-mexico-authorities-say-no-its-not-the-end-times-we-think