Morphology Data of Hyporthodus nigritus
Identification keys
Abnormalities
Main Ref. Heemstra, P.C. and J.E. Randall, 1993
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales ctenoid scales
Diagnosis

Distinguished by the following characteristics: dark reddish brown or brownish grey to almost black dorsally, dull reddish grey below; depth of body contained 2.4-2.6 times in SL; head length 2.1-2.5 times in SL; distinctly convex interorbital area; angular preopercle, rounded angle, with slightly enlarged serrae and with 1-2 small spines on lower edge just in front of angle; smooth interopercle and subopercle; subequal nostrils, posterior nostrils slightly larger; maxilla reaches well past eye; 4-5 rows of small teeth on midside part of lower jaw in adults and juveniles with 2-3 rows (Ref. 89707).

Ease of Identification

Meristic characteristics of Hyporthodus nigritus

Lateral Lines 1 Interrupted: No
Scales on lateral line 62 - 71
Pored lateral line scales
Scales in lateral series 99 - 107
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 14 - 16
on upper limb 9 - 11
total 23 - 27
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1notched No
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 10 - 10
Soft-rays total 13 - 15
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 9 - 9

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   18 - 19
Pelvics Attributes  more or less normal
Position    thoracic  beneath origin of D1
Spines     
Soft-rays   
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