Tetras from the same area of Mexico include Astyanax, Hyphessobrycon, Brycon, Roeboides and Hemigrammus
Below a Roeboides I keep with Panamanian Andinoacara.

Live bearers like Poecilia mollies, and Gambusia are common

There are plenty of other cichlids from the area, but many would depend on the size of your tank, if your tank is 100- 200 gallons, species like
Rocio octofasiata (JDs), Thorichthys like meeki (FMs) or Chuco might work. If it's less than 100 gallons, more cichlids might not be a good idea.
Chuco intermedia below

There are also Gobys like the Eleotris picta below, I keep with the Andinoacara, if your tank is larrge enough.
