Argonectes longiceps are commonly called False Hemiodus or Eartheater Hemiodus. They are similar to a Hemiodus but differ from them because they are not swimming constantly. Argonectes longiceps spend their time on the river bed sifting the sand exactly like a Geophagus.

BELOW: A Argonectes longiceps in its Morichal natural habitat.

BELOW: A Argonectes longiceps between a school of Hemiodus immaculatus in its Morichal natural habitat.

BELOW: Image of a Argonectes longiceps in its Morichal natural habitat.