Hoplias microlepis (Günther, 1864) (Characiformes: Erythrinidae) preying on Rhamdia Guatemalensis (Günther, 1864) (Siluriformes: Heptapteridae) in Panama

Authors

  • Rogemif Fuentes Universidad de Panamá, Facultad de Ciencias Naturales Exactas y Tecnología, Ciudad de Panamá, Panamá. - Fundación Los Naturalistas, P.O. Box 0426-01459, David, Chiriquí, Panamá. - Universidad Autónoma de Chiriquí, Instituto Interdisciplinario de Investigación e Innovación (I4), Panamá. https://orcid.org/0000-0002-4389-2665

DOI:

https://doi.org/10.62430/rtb20262422267

Keywords:

Feeding behavior, Erythrinidae, Heptapteridae, piscivory

Abstract

We report the first documented predator–prey interaction between Hoplias microlepis (Günther, 1864) (Erythrinidae) and Rhamdia guatemalensis (Günther, 1864) (Heptapteridae), observed in Juan Grande Stream, Soberanía National Park, Panama. Photographic evidence shows H. microlepis holding R. guatemalensis in its mouth, with the catfish positioned upside down and gripped immediately behind the head, near the pectoral fins. Neither the initial capture nor the ingestion of the prey was observed. This record documents a previously unreported interaction between these species in Panama.

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References

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Published

2026-11-02

How to Cite

Fuentes, R. (2026). Hoplias microlepis (Günther, 1864) (Characiformes: Erythrinidae) preying on Rhamdia Guatemalensis (Günther, 1864) (Siluriformes: Heptapteridae) in Panama. The Biologist, 24(2). https://doi.org/10.62430/rtb20262422267