Morphology Data of Secutor mazavasaoka
Identification keys
Main Ref. Baldwin, Z.H. and J.S. Sparks, 2011
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth

Together, the new species, S. indicius, and S. insidiator are readily distinguished from all congeners except S. hanedai by a more elongate (depth 40.5–57.7% SL) and essentially oval-shaped body (vs. deep and diskshaped in S. ruconius and S. interruptus [depth 53.4–65.5% SL], and S. megalolepis [depth 58.6–62.6% SL]). The new species is distinguished from S. hanedai by the presence of scales on the chest (vs. chest asquamate), and from S. indicius by an overall deeper (depth 47.3–57.7% SL), hatchet-shaped body (vs. body oval, depth 40.5–48.3% SL in S. indicius), and by pigmentation pattern on the dorsal flank comprising eight to eleven well-defined columns of irregular small spots and blotches (vs. 14 to 17 thin columns of spots or vertical lines in S. indicius). The new species is distinguished from S. insidiator by an overall more hatchet-shaped body (vs. body oval and evenly rounded ventrally in S. insidiator), dorsal pigmentation pattern as described above (vs. larger, irregular blotches inpoorly defined columns in S. insidiator), a strongly upturned mouth and compressed pug-like snout, and dorsal-fin insertion well posterior of vertical through pectoral-fin base (vs. about level of pectoral-fin base in S insidiator) (Ref. 87758).

Ease of Identification

Meristic characteristics of Secutor mazavasaoka

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Busson, Frédéric
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