Morphology Summary - Stolephorus astrum
Morphology Data of Stolephorus astrum
Identification keys
Abnormalities
Main Ref. Hata, H. and H. Motomura, 2024
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  (shape guide)
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished by the following set of characters: maxilla short, 15.9-17.8% of

SL, posterior tip just reaching to or slightly beyond anterior margin of preopercle (just short of anterior margin in individuals < 3.6 cm SL); posterior margin of preopercle convex, rounded; predorsal scutes absent; prepelvic scutes 1-4 (modally 4); pelvic scute no spine; dorsal fin with three unbranched and 12-14 (13) branched rays; anal fin with three unbranched and 18-19 (18) branched rays, the origin located just below base of ninth to eleventh dorsal-fin ray; gill rakers at first (1) gill arch, upper (1UGR) 20-24 + lower (1LGR) 30-34 = 50-56 (1TGR); 2UGR 15-18 + 2LGR 26-30 = 2TGR 42-48; 3UGR 12-13 + 3LGR 15-17 = 3TGR 27-30; 4UGR 9-10 + 4LGR 12-14 = 4TGR 21-24; gill rakers 5-7 on the posterior face of third gill arch; transverse scales 8; pseudobranchial filaments 16-21; total vertebrae 38 or 39; pelvic fin short, 10.2-11.3% of SL, depressed tip reaching posteriorly to vertical through 3rd to 6th dorsal-fin ray origin; pectoral fin short, 15.9-16.3% of SL; predorsal fin length short, 50.1-53.6% of SL; caudal peduncle rather long, 16.8-18.6% of SL; body slender, 16.8-19.0% of SL, distance between dorsal-fin origin and pelvic-fin insertion 20.1-23.4% of SL, between origins of dorsal and anal fins 19.1-20.3%. Colouration: pairs of dark patches on parietal and occipital areas; no dark lines on dorsum; black spots on the tips of snout and lower jaw, but not on suborbital area; melanophores scattered on second to eigth uppermost pectoral-fin rays (Ref. 131038).

Ease of Identification

Meristic characteristics of Stolephorus astrum

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 30 - 34
on upper limb 20 - 24
total 50 - 56
Vertebrae
preanal
total 38 - 39

Fins

Dorsal fin(s)

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

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
(e.g. 9948)
(e.g. oophagy)
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17