Morphofunctional Features of Visceral Apparatus of Silver Arawana Osteoglossum bicirrhosum (Osteoglossidae)

Abstract—The structure of some muscles—previously undescribed ligaments and aponeurotic structures of the visceral apparatus—of silver arawana Osteoglossum bicirrhosum has been studied in detail. A comparative analysis of the obtained results of anatomization and literature data is carried out. The peculiarities of the functioning of the visceral apparatus of silver arawana in the process of feeding are considered. New features of similarity in the structure of muscles of the visceral apparatus of Osteoglossidae and Salmonidae (by the example of salmon Salmo salar), which can provide a basis for confirming previously detected homologous features in the feeding stages of these two primitive groups of fish, are described.