Caranx ruber

Caranx ruber
Bar Jack – Caranx ruber
Photo Credit: G.W. Link
FamilyScientific NameAuthorYearCommon Name
CarangidaeCaranx ruber(Bloch)1793Bar Jack

Caranx ruber

Unique Characters: Posterior straight part of lateral line with enlarged hardened scutes. Scales obvious over most or all of body. Adults with pectoral fins relatively long and falcate, distinctly longer than head length. No black saddle on upper part of caudal peduncle. Scutes on straight part of lateral line 23-56, and relatively large (maximum height at least equal to pupil diameter); body slightly to moderately compressed and ventral profile not more convex than dorsal profile. Anal fin spines distinct and movable. No scutes in posterior part of lateral line point forward. Lobe of second dorsal fin distinctly longer than height of longest dorsal-fin spine. Lips of adults not papillose. Upper jaw with several rows or a band of teeth; both caudal-fin lobes about equal in length. Caudal fin with paired keels. Chest completely scaly; no oval black spot on pectoral fin. Lower gill rakers 31 to 38; adults with a dark blue stripe extending along back and through lower caudal-fin lobe

Similar Species:

Jack Crevalle
Caranx hippos

Blue Runner
Caranx crysos

Caranx hippos
Jack Crevalle – Caranx hippos
Caranx crysos
Blue Runner – Caranx crysos

Jack Crevalle Caranx hippos. Posterior straight part of lateral line with enlarged hardened scutes. Scales obvious over most or all of body. Adults with pectoral fins relatively long and falcate, distinctly longer than head length. No black saddle on upper part of caudal peduncle. Scutes on straight part of lateral line 23-56, and relatively large (maximum height at least equal to pupil diameter). Body slightly to moderately compressed and ventral profile not more convex than dorsal profile. Anal fin spines distinct and movable. No scutes in posterior part of lateral line point forward. Lobe of second dorsal fin distinctly longer than height of longest dorsal-fin spine. Lips of adults not papillose. Upper jaw with several rows or a band of teeth; both caudal-fin lobes about equal in length. Caudal fin with paired keels. Chest naked except for a small patch of prepelvic scales. Adults with oval black spot on pectoral fin.

Blue Runner Caranx crysos. Posterior straight part of lateral line with enlarged hardened scutes. Scales obvious over most or all of body. Adults with pectoral fins relatively long and falcate, distinctly longer than head length. No black saddle on upper part of caudal peduncle. Scutes on straight part of lateral line 23-56, and relatively large (maximum height at least equal to pupil diameter). Body slightly to moderately compressed and ventral profile not more convex than dorsal profile. Anal fin spines distinct and movable. No scutes in posterior part of lateral line point forward. Lobe of second dorsal fin distinctly longer than height of longest dorsal-fin spine. Lips of adults not papillose. Upper jaw with several rows or a band of teeth; both caudal-fin lobes about equal in length. Caudal fin with paired keels. Chest completely scaly; no oval black spot on pectoral fin. Lower gill rakers 25-28. No dark blue stripe extending along back and through lower caudal-fin lobe. Lateral-line scutes 46-56

Yellow Jack
Caranx bartholomaei

Horse-eye Jack
Caranx latus

Caranx latus
Horse-eye Jack – Caranx latus

Yellow Jack Caranx bartholomaei. Posterior straight part of lateral line with enlarged hardened scutes. Scales obvious over most or all of body. Adults with pectoral fins relatively long and falcate, distinctly longer than head length. No black saddle on upper part of caudal peduncle. Scutes on straight part of lateral line 23-56, and relatively large (maximum height at least equal to pupil diameter). Body slightly to moderately compressed and ventral profile not more convex than dorsal profile. Anal fin spines distinct and movable. No scutes in posterior part of lateral line point forward. Lobe of second dorsal fin distinctly longer than height of longest dorsal-fin spine. Lips of adults not papillose. Upper jaw with several rows or a band of teeth; both caudal-fin lobes about equal in length. Caudal fin with paired keels. Chest completely scaly; no oval black spot on pectoral fin. Lower gill rakers 16-21. No dark blue stripe extending along back and through lower caudal-fin lobe. Lateral-line scutes 22-39. Dorsal- and anal-fin rays 25-28 and 21-24, respectively

Horse-eye Jack Carnax latus. Posterior straight part of lateral line with enlarged hardened scutes. Scales obvious over most or all of body. Adults with pectoral fins relatively long and falcate, distinctly longer than head length. No black saddle on upper part of caudal peduncle. Scutes on straight part of lateral line 23-56, and relatively large (maximum height at least equal to pupil diameter). Body slightly to moderately compressed and ventral profile not more convex than dorsal profile. Anal fin spines distinct and movable. No scutes in posterior part of lateral line point forward. Lobe of second dorsal fin distinctly longer than height of longest dorsal-fin spine. Lips of adults not papillose. Upper jaw with several rows or a band of teeth; both caudal-fin lobes about equal in length. Caudal fin with paired keels. Chest completely scaly; no oval black spot on pectoral fin. Lower gill rakers 16-21. No dark blue stripe extending along back and through lower caudal-fin lobe. Lateral-line scutes 22-39. Dorsal- and anal-fin rays 19-23 and 16-19, respectively. In life, body dark blue to bluish grey above, silvery white to golden below. Adults with upper jaw extending to vertical at rear margin of eye. Dorsal-fin lobe shorter than head, about 5.6-6.0 times in fork length

Black Jack
Caranx lugubris

Black Jack Caranx lugubris. Posterior straight part of lateral line with enlarged hardened scutes. Scales obvious over most or all of body. Adults with pectoral fins relatively long and falcate, distinctly longer than head length. No black saddle on upper part of caudal peduncle. Scutes on straight part of lateral line 23-56, and relatively large (maximum height at least equal to pupil diameter). Body slightly to moderately compressed and ventral profile not more convex than dorsal profile. Anal fin spines distinct and movable. No scutes in posterior part of lateral line point forward. Lobe of second dorsal fin distinctly longer than height of longest dorsal-fin spine. Lips of adults not papillose. Upper jaw with several rows or a band of teeth; both caudal-fin lobes about equal in length. Caudal fin with paired keels. Chest completely scaly; no oval black spot on pectoral fin. Lower gill rakers 16-21. No dark blue stripe extending along back and through lower caudal-fin lobe. Lateral-line scutes 22-39. Dorsal- and anal-fin rays 19-23 and 16-19, respectively. In life, head, body, and fins grey to dark brown. Adults with upper jaw extending to below vertical from anterior half to middle of eye. Dorsal-fin lobe longer than head, about 2.3-5.3 times in fork length

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