Also known as Black Tetra, Silver Tetra, Silver Widow Tetra.
Found in shallow to mid-level freshwater rivers and river basins.
They feed on small crustaceans, insects, worms.
Length - 5cm
Depth - ?m
Widespread South America
Found extensively in the aquarium trade.
Same family as Piranha's
Piranha's have a fearsome reputation (because of James bond 007) as a voracious predator that can strip flesh off bones in minutes, although they have razor sharp teeth they are in fact quite timid scavengers. Ref: https://www.fishbase.se/summary/12356