| 診断 |
Diagnosis: Rostral blade with 20 or fewer pairs of rostral spines (Ref. 81624).
Description: Pristis pristis is characterized by its long and thin rostral teeth, grooved on their hind margin and numbering less than 20 pairs (Ref. 81284, 81624). First dorsal fin originating slightly anterior to pelvic fin origin and base longer than second dorsal fin (Ref. 81284, 81624). Second dorsal fin positioned well posterior to pelvic fins (Ref. 81624). Caudal fin shark-like, with a large dorsal lobe and a reduced, but distinct, small ventral lobe (Ref. 81284, 81624).
Colouration: Back brownish-grey to ochre, belly white, greyish-white or yellowish-white and without any distinctive pattern (Ref. 81284, 81624). |