An important step towards our understanding of
the evolution of terrestriality in vertebrates is to identify how the
aquatic ancestors of tetrapods were able to exploit terrestrial prey
resources. We discovered that the eel-catfish (Channallabes
apus), an inhabitant of the muddy swamps of tropical Africa,
possesses the remarkable ability to forage and capture prey on land. The
animal’s capacity to bend the head down towards the substrate while
feeding terrestrially appears to be an essential feature for fishes to
make the transition from an aquatic to a terrestrial feeding mode.
Van
Wassenbergh S., Herrel A., Adriaens, D., Huysentruyt S., Devaere S. and
Aerts P. (2006). A catfish that can strike its prey on land.
Nature 440, 881.
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