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Related Experiment Video

Updated: Jan 21, 2026

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Cuckoo catfish.

Martin Reichard1

  • 1Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, Brno, Czech Republic.

Current Biology : CB
|August 7, 2019
PubMed
Summary
This summary is machine-generated.

The cuckoo catfish is the only known vertebrate, outside of birds, that exhibits obligatory brood parasitism. This fascinating reproductive strategy involves laying eggs in other species nests.

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Area of Science:

  • Ichthyology
  • Evolutionary Biology
  • Behavioral Ecology

Background:

  • Obligate brood parasitism is a reproductive strategy where parents forgo all parental care.
  • While common in birds, this behavior is exceptionally rare in other vertebrate groups.

Purpose of the Study:

  • To introduce and describe the cuckoo catfish (family: Siluriformes).
  • To highlight its unique status as the only known non-avian vertebrate exhibiting obligate brood parasitism.

Main Methods:

  • Observational studies of catfish behavior.
  • Review of existing literature on vertebrate reproductive strategies.

Main Results:

  • The cuckoo catfish engages in obligate brood parasitism.

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  • This represents a unique instance of this reproductive strategy in a non-avian vertebrate.

    • Conclusions:

    • The cuckoo catfish provides a novel model for studying the evolution of brood parasitism.
    • Further research into its behavior and evolutionary history is warranted.