the region of the body between the end of the anal fin and the base of the caudal fin 
the narrow portion of the body located just behind the anal fin and just before the caudal fin. 
The tapering portion of a fish's body between the posterior edge of the anal fin base and the base of the caudal fin.
The part of the body immediately anterior to the caudal fin, between the anal fin and the base of the caudal fin.
the tapering portion of a fish's body between the posterior edge of the anal fin base and the base of the caudal fin.
the portion of a cetacean's body between the dorsal fin and the fluke (tail). See also
The part of the body of a fish between the posterior end (rear) of the anal fin base and the base of the caudal fin.
(L: cauda=tail; pedis foot; peduncle stalk) the part of a fish that connects the body to the tail fin.
The tapering portion of a fish's body between the posterior edge of the anal fin base and the base of the caudal fin.
the region of the body between the end of the anal fin and the base of the caudal fin
The narrow part of the shark to which the tail fin is attached