If you look back at my original comment I stated that most likely the Gambusia were accidentally stocked with the desired fish. I also stated that there of course is the possibility of birds transporting eggs etc. and I stated that this is rarely ever the case. The odds are slim to none however do I believe has this ever happened before in history, yes I do. There are numerous shore birds around the world and they often times wade around bodies of water. If lets say heron steps in a shallow nest of green sunfish which by the way green sunfish often times nest extremely close to shore. Ps green sunfish usually lay several thousands of eggs. The heron then flys off with eggs attached to its feathers, feet, etc. and goes to a near by body of water and the eggs splash off the body of the heron when landing in water. This is why I don't understand how hard it is to believe that this could happen. I also never talked about a kingfisher grabbing a fish and dropping into water. Furthermore I did not ever mention eagles digesting eggs and the eggs somehow hatch after being digested. I never also stated that this was the case but instead just listed as example.