Fig. 2. Schematic representation of the two potential hyoid-depression mechanisms
(A,B) in Clarias gariepinus. Colours and symbols correspond to those
in Fig. 1. l-puh-hh, ligamentum
parurohyalo-hypohyale; m-epax, epaxial muscles; m-hypax, hypaxial muscles;
m-sh, musculus sternohyoideus; o-puh, os parurohyale.