Yes I believe they were Ilyodon furcidens, the pic is a few years old.
I also keep, or have kept other high altitude Mexican live bearers, in cold tanks.
Zoognotecha tequilla
Xenoteca eiseni
There are also Uruguayan cool water Corydorus, like C. erhardti below
I also keep, or have kept other high altitude Mexican live bearers, in cold tanks.
Zoognotecha tequilla
Xenoteca eiseni
There are also Uruguayan cool water Corydorus, like C. erhardti below
Is that a Goodeid in one of your pictures?