Morphology Data of Helcogramma vulcana
Identification keys
Abnormalities
Main Ref. Williams, J.T. and J.C. Howe, 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors different colors during breeding season only
Remarks Male nuptial color of head and anterior body reddish, masked with black on ventral half, median fins also blackish (Ref. 90102).

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
Type of scales
Diagnosis

Description: Dorsal rays III + XIV-XVI (usually XV) + 10-12; anal fins I, 21-23; pectoral rays 15-17; pelvic fin I, 2. Vertebrae 10+29; vertebral centrum, last pleural ribs 10. Lateral line continuous, pored scales 19-23 (usually 21); scales ctenoid; largest (twice in size) at the area posterior to pectoral-fin base and below the lateral line; head, nape, belly, and pectoral-fin base scaleless. Mandibular sensory pores, 4+1+4; orbital cirri minute (52308, 90102). Overall translucent to grey or brown, dorsal greenish, shading to yellowish tan on sides, with H-shaped bars, and horizontal stripe below eye. Male nuptial color of head and anterior body reddish, masked with black on ventral half, median fins also blackish (Ref. 90102).

Ease of Identification

Meristic characteristics of Helcogramma vulcana

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
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 3
Finlets No. Dorsal   
Ventral  
Spines total 18 - 8
Soft-rays total 10 - 12
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 21 - 23

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   15 - 17
Pelvics Attributes  
Position    
Spines     1
Soft-rays   2 - 2
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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