Morphology Data of Symphysanodon mona
Identification keys
Abnormalities
Main Ref. Anderson, W.D. and V.G. Springer, 2005
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 elongated
Cross section
Dorsal head profile more or less straight
Type of eyes
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales
Diagnosis

The species differs from all other species of the genus in having fewer gillrakers on first arch (4 or 5 + 19-21 = 24 or 25 total vs. 8-14 + 20-29 = 28-42 total). In addition, it differs from other Atlantic species in having a ventral branch of obliquus dorsalis 3 muscle (vs. its absence in the other two species) and in having a posteriorly projecting extension of the cartilaginous lateral end of ceratobranchial 4 (vs. its absence in the other two species; S. berryi has a small accessory cartilage associated with the lateral end of ceratobranchial 4; the specimen of S. octoactinus examined may have had a very small accessory cartilage that was lost during dissection).

Ease of Identification

Meristic characteristics of Symphysanodon mona

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 19 - 21
on upper limb 4 - 5
total 24 - 25
Vertebrae
preanal 10 - 10
total 25 - 25

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total 9 - 9
Soft-rays total 10 - 10
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total 3 - 3
Soft-rays total 7 - 7

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   17 - 17
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
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