For the discussion of catfish systematics. Post here to draw our attention to new publications or to discuss existing works.
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Lubich, C. C., Martins, A. R., Freitas, C. E., Hurd, L. E., & Siqueira-Souza, F. K. (2021). A candiru, Paracanthopoma sp.(Siluriformes: Trichomycteridae), associated with a thorny catfish, Doras phlyzakion (Siluriformes: Doradidae), in a tributary of the middle Rio Negro, Brazilian Amazon. Acta Ichthyologica et Piscatoria, 51, 241.
Amazonian vampire catfish, known regionally as “candiru”, are recognized as hematophagous fishes, but information on their ecology remains limited. We provide the first report of Paracanthopoma
sp. (Vandelliinae) found attached to the body surface of a thorny catfish, Doras phlyzakion
Sabaj Pérez et Birindelli, 2008, bellow the lateral bony plates, rather than at the gills where they have usually been found. The specimens had not recently ingested blood or other identifiable fish remains (flesh, skin, or mucus), which could be an indication they have been using this host for protection or as a phoretic association, rather than for feeding. Thus, the interaction of vampire fish with the host catfish may be more complex than previously understood.
- Keywords: candiru, vampire fish, interspecific fish relations, Actinopterygii, Siluriformes, Vandelliinae
- Figure 2. Doras phlyzakion with vampire fish (Paracanthopoma sp.) fixed into its epidermis close to the bony plates of the lateral
line. Collected from the Demeni River, left bank tributary of the Negro River, Amazonas State, Brazil.