Most characins are tetras, it is just a a common term generally used to describe smaller, tropical characidae. Piranha, payara, and pacus could be included as in the tetra group.
You could try a small group of german rams or cockatoo apistogrammas. Or since you are from Oz you could try Nannoperca australis (dwarf perch) 3", Nannoperca variegata (Golden dwarf perch) 2 1/2", Pingalla gilberti (Gilbert's grunter) peaceful 4", Mugilogobius wilsoni (Wilson's goby) 1 3/4", Pseudomugil cyanodorsalis 1 1/2", or maybe some of the many ambassidae perchlets.





You could try a small group of german rams or cockatoo apistogrammas. Or since you are from Oz you could try Nannoperca australis (dwarf perch) 3", Nannoperca variegata (Golden dwarf perch) 2 1/2", Pingalla gilberti (Gilbert's grunter) peaceful 4", Mugilogobius wilsoni (Wilson's goby) 1 3/4", Pseudomugil cyanodorsalis 1 1/2", or maybe some of the many ambassidae perchlets.




