Catfish study reveals multiplicity of species

An extensive investigation of South American Corydoras catfish, reveals that catfish communities, although containing almost identically colored and patterned fish, could actually contain three or more different species. Establishing for the first time that many species are mimetic, this discovery suggests that in many cases the number of Corydoras catfish species may be higher than previously recognized, with consequent implications for environmentalists charged with protecting environmental diversity and safeguarding the species.

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