In the aquariumEdit
Cardinal tetras grow to about 3 centimetres. They are shoaling fish and like to be kept with other cardinal tetras and they can be kept with other non-aggressive fish. In good conditions the cardinal tetra can live for about five years. The cardinal tetra is a very popular fish but is not as popular as the neon tetra because it is more difficult to breed. They like to live in a temperature of around 23–27°C.
- http://www.practicalfishkeeping.co.uk/content.php?sid=3139 Archived 2011-07-08 at the Wayback Machine