Il s'agit d'une Forme de Bouche tournée Vers le bas, laquelle permet de chercher la Nourriture dans le Sol en fouissant. L'exemple le plus connu étant les corydoras.
\1e 11 October 2008 : Turf Wars: Sand And Corals Don't Mix :: from ScienceDaily News Advanced Aquarist Online Magazine
\1e 11 October 2008 : Divers first to descend to remains of the 'Titanic of New England' (Gloucester Daily Times) :: from National Marine Sanctuary News Advanced Aquarist Online Magazine
\1e 11 October 2008 : Three-Year Global Reef Expedition Announced by the Khaled bin Sultan Living Oceans Foundation Research and Monitoring ... (Marketwire via Yahoo! Finance) :: from Yahoo! News Advanced Aquarist Online Magazine
\1e 11 October 2008 : Species Extinction By Asteroid A Rarity :: from ScienceDaily News Advanced Aquarist Online Magazine
\1e 8 October 2008 : Freshwater prawn hatcheries in Bangladesh: Concern of broodstock Network of Aquaculture Centres in Asia-Pacific - News
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