Hi,
I also have tetra tanks
,
Neon Tetras - small but stunning
Columbian tetras - blue body, red fins, grows about 2" peaceful and stunning
Diamond Tetras - also grows to about 2", colours take a while to develop but beautiful when adult
Rosy Tetras - don't look like much in the shop but once at home in the tank go a lovely deep rosy red colour and display to each other almost all the time
Bolivian Rams and blue rams are also in the tanks along with cories and a bristlenose cat.
As with most fish these tetras don't really show their best colours in the shop and can take up to a week or two to settle and start showing good colours, but they are well worth the wait