Morphology Data of Grallenia arenicola
Identification keys
Main Ref. Shibukawa, K. and A. Iwata, 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 elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is characterized by the following: second dorsal-fin rays I, 7-8 (usually I, 7); anal-fin rays I, 7-8 (usually I, 7); vertebrae 10+17-18=27 (usually 10+17=27); dorsal-fin spines not elongated in either sex; second dorsal fin does not reach the caudal-fin base when adpressed, length of longest ray 14.0-17.6% of SL; length of longest ray of anal fin 8.9-13.3% of SL; scales on body extending anteriorly to just behind pectoral-fin base; weak, low pelvic frenum; length of pectoral fin 20.7-25.9% of SL; caudal-peduncle length 24.6-28.6% of SL;

cephalic sensory canals with pores C' (unpaired), D (unpaired), E and F'; orange line absent on dorsal fins (Ref. 75132).

Ease of Identification

Meristic characteristics of Grallenia arenicola

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
preanal 10 - 10
total 27 - 28


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   
Spines total 7 - 7
Soft-rays total 7 - 8
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total 1 - 1
Soft-rays total 7 - 8

Paired fins

Pectoral Attributes  
Soft-rays   15 - 17
Pelvics Attributes  
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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