Morphology Data of Hippocampus pusillus
Identification keys
Abnormalities
Main Ref. Fricke, R., 2004
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 other
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This pygmy spiny seahorse is distinguished by the following characters: dorsal fin rays 15; pectoral fin rays 12-13; trunk rings 13; tail rings 34; subdorsal spines 3/0,1,0; moderately large nose spine, its height about equal to or slightly smaller than pupil; above the eyes, the double spine is moderately long, longer than pupil diameter; lateral head spine double and large; raised coronet with 6 groups of 1-6 spines each; restricted gill openings, not reaching to neck ridge; shoulder rings confluent over the neck ridge forming a continuous collar; upper shoulder ring spine opposite 9th-11th pectoral fin rays; snout length is approximately 45-47% of head length (Ref. 75989).

Ease of Identification

Meristic characteristics of Hippocampus pusillus

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
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 15 - 15
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 12 - 13

Paired fins

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