Top one is a stickleback, which can't be determined for sure with that picture. Second fish is definitely a banded killifish.
Thanks so much. I have never even heard of a stickleback.
But looking at the VA aquarium page, I honestly think I am also getting mummichogs in the same spot.
It is an oxbow type lake off the main Patuxent River that is definitely tidal and floods thru culverts into road side ditches at high tide. Schools of minnows follow the tides into and out of the shallow water.
