Oropharyngeal cavity of carp. (A) Schematic representation of the roof and floor of the carp oropharyngeal cavity (adapted from ). The cavity is subdivided into four sections: oral cavity (oc), buccal cavity (bc), anterior pharynx (ap), posterior pharynx (pp). esophagus (e); lp, lingual process; ba, branchial arch; gr, gill raker; pt, pharyngeal teeth; and cp, chewing pad. (B) Endoscopy views of carp oropharyngeal cavity. A 2 kg carp was anesthetized before exploration of its oropharyngeal cavity by endoscopy. Panels i-iii illustrate bc, ap, and pp, respectively.