Occasionally amongst imports of Oxydoras niger there are some slightly different specimens which tend to have black coloured fins and a grey coloured body. These so-called contaminants are Oxydoras sifontesi.
sidguppy wrote:this might need a slight push from "Other Catfishes" to "South American Catfishes (everything else)"
MatsP wrote:I'm unsure as to what the morphological differences would be (aside from the colour differences).
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