Company: Serrasalmus niger (Black Piranha) are best kept with other large piranhas and might sometimes turn against fishes sin their own school. . Piranhas will usually leave snails alone.
Scientific Name: Serrasalmus niger
Basic Info
At maturity, Black Piranhas can reach a size of two feet in the wild, though they are usually much smaller in captivity.
For example, the species formerly known as Serrasalmus niger is nowadays known as Serrasalmus rhombeus, and there are many indications that this species is in actuality a complex of similar looking, ...
The body is elongated in relation to other Piranhas. Black spots cover the body but fade with age, as the fins darken. Serrasalmus rhombeus is often confused with the Black Piranha, Serrasalmus niger.
 See also: Piranha, Black Piranha, Fish, Water, White Piranha
  
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