Seriola zonata

Seriola zonata
Banded Rudderfish – Seriola zonata
FamilyScientific NameAuthorYearCommon Name
CarangidaeSeriola zonata(Mitchill)1815Banded Rudderfish

Seriola zonata

Unique Characters: Supramaxilla of adults moderately slender. Posterior straight part of lateral line without scutes. Pectoral fins shorter than head length. Body scales oval-shaped; upper jaw protractile. No semi-detached finlets. Bases of soft dorsal and anal fins unequal in length, anal-fin base about 45-70% of dorsal-fin base. Caudal peduncle grooves present, dorsally and ventrally. No finlets in dorsal and anal fins; upper jaw ending between vertical through front and rear margins of eye. First dorsal fin with 7 or 8 spines (caution: anterior spines may become embedded in very large fish). Caudal-fin lobes without prominent white tips. Upper jaw extending to vertical at front margin to middle of pupil. Adults with median fleshy keel on side of caudal peduncle absent to moderately developed. Total developed gill rakers 14-20 in fish 10-20 cm fork length, and 11-16 in fish greater than 20 cm fork length. Nuchal band, if present, extending from eye to origin of first dorsal fin. First dorsal-fin spines usually 8; dorsal-fin rays 33-39; body bands (present to about 25 cm fork length) solid and regular, extending onto dorsal and anal fins. Anal-fin base short, contained 1.6-2.1 times in second dorsal-fin base.

Seriola zonata
Banded Rudderfish – Seriola zonata – upper jaw

Similar Species:

Greater Amberjack
Seriola dumerili

Lesser Amberjack
Seriola fasciata

Almaco Jack
Seriola rivoliana

Seriola dumerili
Greater Amberjack – Seriola dumerili
Seriola dumerili
Greater Amberjack – Seriola dumerili – upper jaw
Seriola fasciata
Lesser Amberjack – Seriola fasciata
Seriola fasciata
Lesser Amberjack – Seriola fasciata – upper jaw
Seriola rivoliana
Almaco Jack – Seriola rivoliana
Seriola rivoliana
Almaco Jack – Seriola rivoliana – upper jaw

Greater Amberjack Seriola dumerili. Supramaxilla of adults broad, with posterodorsal angle rounded. Posterior straight part of lateral line without scutes. Pectoral fins shorter than head length. Body scales oval-shaped; upper jaw protractile. No semi-detached finlets. Bases of soft dorsal and anal fins unequal in length, anal-fin base about 45-70% of dorsal-fin base. Caudal peduncle grooves present, dorsally and ventrally. No finlets in dorsal and anal fins; upper jaw ending between vertical through front and rear margins of eye. First dorsal fin with 7 or 8 spines (caution: anterior spines may become embedded in very large fish). Caudal-fin lobes without prominent white tips. Upper jaw extending to vertical at front margin to middle of pupil. Adults with median fleshy keel on side of caudal peduncle absent to moderately developed. Total developed gill rakers 14-20 in fish 10-20 cm fork length, and 11-16 in fish greater than 20 cm fork length. Nuchal band, if present, extending from eye to origin of first dorsal fin. First dorsal-fin spines usually 7; dorsal-fin rays 29-34. Body bands (present to about 20 cm fork length) irregular and divided vertically, terminating on body and not extending onto dorsal and anal fins. Anal-fin base moderately short, contained 1.4-1.7 times in second dorsal-fin base.

Lesser Amberjack Seriola fasciata. Supramaxilla of adults relatively slender and not rounded. Posterior straight part of lateral line without scutes. Pectoral fins shorter than head length. Body scales oval-shaped. Upper jaw protractile. No semi-detached finlets. Bases of soft dorsal and anal fins unequal in length, anal-fin base about 45-70% of dorsal-fin base. Caudal peduncle grooves present, dorsally and ventrally. No finlets in dorsal and anal fins. Upper jaw ending between vertical through front and rear margins of eye. First dorsal fin with 7 or 8 spines (caution: anterior spines may become embedded in very large fish). Caudal-fin lobes without prominent white tips. Upper jaw extending to vertical at front margin to middle of pupil. Adults with median fleshy keel on side of caudal peduncle absent to moderately developed. Total developed gill rakers 24-27 in fish 10-20 cm fork length, and 21-28 in fish greater than 20 cm fork length. Dorsal-fin lobe 6.4-8.6 times in fork length. Nuchal band, when present, extending from eye to nape, well in advance of dorsal- fin origin. Body bands (present to about 20 cm fork length) extending onto dorsal and anal fins.

Almaco Jack Seriola rivoliana.Supramaxilla of adults broad, with posterodorsal angle acute. Posterior straight part of lateral line without scutes. Pectoral fins shorter than head length. Body scales oval-shaped. Upper jaw protractile. No semi-detached finlets. Bases of soft dorsal and anal fins unequal in length, anal-fin base about 45-70% of dorsal-fin base. Caudal peduncle grooves present, dorsally and ventrally. No finlets in dorsal and anal fins. Upper jaw ending between vertical through front and rear margins of eye. First dorsal fin with 7 or 8 spines (caution: anterior spines may become embedded in very large fish). Caudal-fin lobes without prominent white tips. Upper jaw extending to vertical at front margin to middle of pupil. Adults with median fleshy keel on side of caudal peduncle absent to moderately developed. Total developed gill rakers 24-27 in fish 10-20 cm fork length, and 21-28 in fish greater than 20 cm fork length. Dorsal-fin lobe 4.0-6.3 times in fork length. Nuchal band, when present, extending from eye to origin of first dorsal fin. Body bands (present to about 20 cm fork length) not extending onto dorsal and anal fins.

Gallery