now the common kilifish.
Which is actually a Mummichog. I've got a few pets in a tank that I've been neglecting all winter. Whenever there were leftovers from some larger fish that didn't want to eat anymore-the small guys got to clean up. They are super easy to breed. Here they use a pleated filter hung in the water that has been brought up to the spawning temperature range. And then they pull the filter and leave it out of the water for a period-just like low tide. And they hatch when they get wet again.
http://www.gma.org/fogm/Fundulus_heteroclitus.htm
