Hoofdreferentie | Nakamura, I., 1985 |
Uiterlijke beschrijving verwijst naar | |
Bones in OsteoBase |
Gespecialiseerde organen | |
Verschillende uiterlijke vorm | |
Verschillende kleuren | |
Opmerkingen |
Opvallende kenmerken | |
Laterale lichaamsvorm | elongated |
Dwarsdoorsnede | oval |
Dorsaal kopprofiel | clearly convex |
Type ogen | more or less normal |
Type muil/snuit | upper jaw greatly elongated |
Positie van de muil | |
Type of scales | |
Diagnose |
Body elongated and not very compressed; upper jaw produced into a robust but not very long beak; two dorsal fins, the height of the first less then the greatest body depth, short anteriorly, taller in the middle, then becoming shorter posteriorly; pectoral fins falcate and flexible, with 21 to 23 rays; body densely covered with small, embedded scales with 1 or 2 sharp points; back dark blue, with 15 bluish bars across the flanks; belly pale silver; membrane of first dorsal fin blue black, with dark spots (Ref. 55763). Dark blue above, silvery white below; sometimes with light blue vertical stripes; 1st dorsal fin blackish to dark blue, other fins dark brown with tinges of dark blue in some specimens. Body blue-black dorsally and silvery white ventrally, with about 25 pale, cobalt-colored stripes, each consisting of round dots or narrow bars (may not always be visible especially in preserved specimens). Bill long, extremely stout and round in cross section. Nape conspicuously elevated. Right and left branchiostegal membranes completely united together, but free from isthmus. No gill rakers. Body densely covered with elongate, thick, bony scales, each often with 1 or 2, sometimes 3, posterior points. Caudal peduncle with strong double keels on each side and a shallow notch on both the dorsal and ventral surfaces. |
Gemak van identificatie |
Laterale lijnen | Onderbroken: No |
Aantal schubben op laterale lijn | |
Aantal geperforeerde schubben op laterale lijn | |
Aantal schubben in lateral serie | |
Aantal rijen schubben boven laterale lijn | |
Aantal rijen schubben onder laterale lijn | |
Aantal schubben rond staartsteel | |
Baarddraden | |
Kieuwspleten (enkel bij haaien en roggen) | |
Kieuwdoornen | |
op onderste gedeelte | |
op bovenste gedeelte | |
totaal | |
Wervels | |
preanaal | 11 - 11 |
totaal | 24 - 24 |
Eigenschappen | |
Aantal vinnen | 2 |
Aantal bijvinnen | Dorsal |
Ventral | |
Totaal aantal stekels | |
Totaal aantal zachte vinstralen | 40 - 45 |
Vetvin |
Eigenschappen | forked; more or less normal |
Aantal vinnen | 2 |
Totaal aantal stekels | |
Totaal aantal zachte vinstralen | 18 - 24 |
Pectorale vinnen | Eigenschappen more or less normal |
stekels | |
Zachte vinstralen 20 - 23 | |
Pelvische vinnen | Eigenschappen more or less normal |
Positie thoracic behind origin of D1 | |
stekels | |
Zachte vinstralen |