Assertion: piranha's fish | /r/HasProperty | depend on the collection point
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text: 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, but different fish (depending on the collection point, among other factors), which means the Serrasalmus rhombeus-'complex' eventually may be split up in separate species if scientific research confirms this theory.