Morphology Data of Centrodraco abstractum
Identification keys
Abnormalities
Main Ref. Fricke, R., 2002
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Male has a slightly higher second dorsal fin than the female, the second dorsal fin rays with short distal filaments which are lacking in the female; anterior and posterior basal portions of the second dorsal fin is dusky in male and pale in the female.

Descriptive characteristics of juvenile and adult

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

Distinguished by the following characters D1 III, D2 12-14; A 13; pectoral 24-27; the first dorsal spine is slightly longer than the second one in both sexes, but not elongate; the second dorsal fin distally slightly convex in both sexes, with the male having very short distal filaments (none in females); sides of body with a group of 6-7 short transverse streaks below the anterior portion of the second dorsal fin, with a dark saddle each before the first dorsal fin base and behind the second dorsal fin base, and a dark area on the caudal peduncle and basal caudal fin extending as a short dorsal dark stripe on the proximal one-third of the caudal fin; anterior and posterior basal sections of second dorsal fin dusky in male, the vertical fins otherwise pale (Ref. 75990).

Ease of Identification

Meristic characteristics of Centrodraco abstractum

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 2
Finlets No. Dorsal   
Ventral  
Spines total 3 - 3
Soft-rays total 12 - 14
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 13 - 13

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   24 - 27
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
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