Differs from the shortnose sturgeon in having a longer, more sharply V-shaped snout, a larger number of scutes between the anal and caudal fins (4 vs. 1), preanal scutes in two rows rather than in one row, and a large number of scutes behind the dorsal fin (6-9 vs. 2). Differs from the white sturgeon in having scutes between the anal and caudal fins and between the dorsal and caudal fins (obvious scutes are absent in these locations in white sturgeon). Differs from green sturgeon in being blue-black above rather than green, and in having two rows of preanal scutes (vs. 1) and 4 (vs. 1) large scutes between the anal and caudal fins. See Page and Burr (1991).
No one has provided updates yet.