Shoal: A group of fish (can be of different species) that stays loosely together for social and protective reasons.
School: A group of the same species of fish that are swimming in the same direction together in a coordinated way and can form shapes in the water.
There are about 1270 species of Killifish! Our Striped Killifish, Banded Killifish and Mummichog are only 3 of the species.
Killifish can tolerate extremes in temperature, salinity and even oxygen levels. For this reason, Killifish were the first-ever fish sent into space in 1973 aboard Skylab, the United States’ first space station to see how fish would tolerate zero gravity. The fish had a hard time finding which way was up or down while swimming!