Morphology Summary - Thrissina evermanni
Morphology Data of Thrissina evermanni
Identification keys
Abnormalities
Main Ref. Hata, H., I.F. Mandagi and K.W.A. Masengi, 2023
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) elongated
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 characteristics: short maxilla, posterior tip not

reaching to posterior margin of opercle; first supramaxilla is elongated, longer than half length of second; abdomen covered with 4-6 + 8-10 = 12-16 keeled scutes; no scutes on anterior to pectoral fin; 1UGR (upper gill rakers of first gill arch) 16-18, 1LGR (lower gill rakers of first gill arch) 21-23, 1TGR (total gill rakers of first gill arch) 38-40; 2UGR 13-15, 2LGR 22-24, 2TGR 36-38; 3UGR 11-12, 3LGR 13-15, 3TGR 25-27; 4UGR 10-11, 4LGR 10-12, 4TGR 20-23; no distinct black blotches on dorsal fin; caudal peduncle is narrow [9.3-10.2% (mean 9.7%) of SL] and long (9.7-10.5% of SL); pre-dorsal-fin is long, 50.6-52.0% of SL; snout long, 4.9-5.3% of SL (Ref. 129422).

Ease of Identification

Meristic characteristics of Thrissina evermanni

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 21 - 23
on upper limb 16 - 18
total 38 - 40
Vertebrae
preanal
total 40 - 40

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 14 - 15
Adipose fin

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 30 - 33

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   12 - 14
Pelvics Attributes  
Position    
Spines     
Soft-rays   7 - 7
(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