A peaceful fish coming from Argentina, fomerly known as Aphyocharax rubripinnis.
It looks attractive swimming in a shoal, is well known for tolerating cooler
conditions and is easily bred. John Cornelius
found that they would live happily at temperatures down to 10° C. They become
more colourful and, Cornelius felt, actually did better at the lower temperature
than at what we may see as "normal" tropical temperatures.
