Morphology Data of Leptachirus darwinensis
Identification keys
Main Ref. Randall, J.E., 2007
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 short and / or deep
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is distinguished by the following characters: D 71-73; A 53-56; pelvic rays 4; lateral-line scales 90-96; lateral line on ocular side of head with a ventral branch of 4-9 pores, remaining horizontal anterior part with 5-7 pores; vertebrae 40-41; dorsal pterygiophores anterior to fourth neural spine 8-9; body depth 3.1-3.2 in SL; no caudal peduncle; head length 4.3-4.6 in SL; small eyes, diameter 6.8-7.7 in HL; interorbital width 9.3-10.8 in HL; longest dorsal ray 1.85-1.95 in HL; caudal fin 4.1-4.35 in SL; pelvic fins and genital papilla not joined, their origins adjacent; short pelvic fins, reaching little beyond base of first anal ray, 2.75-3.05 in HL; ocular side light brown mottled with small darker brown blotches; 3 longitudinal rows of dark brown blotches of one to two eye diameters in size; dorsal and anal fins with indistinct brown spots centered on single rays and membrane to each side; caudal fin pale yellowish with of dark brown spots at base and transverse rows of progressively smaller and fainter spots in distal two-thirds of fin (Ref. 84817).

Ease of Identification

Meristic characteristics of Leptachirus darwinensis

Lateral Lines Interrupted: No
Scales on lateral line 90 - 96
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
total 40 - 41


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 71 - 73
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total 53 - 56

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Soft-rays   4 - 4
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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