Morphology Summary - Ostichthys japonicus
Morphology Data of Ostichthys japonicus
Identification keys
Abnormalities
Main Ref. Matsunuma, M., Y. Fukui and H. Motomura, 2018
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) short and / or deep
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 characters: D XI-XII,12-14 (modally XII,13); pectoral-fin rays 15-18 (17); pored lateral-line scales 27-29 (28); scale rows between lateral line and middle of spinous dorsal-fin base 3.5; lower gill rakers, including all rudiments 11-14 (13); middle dorsal-fin spines are relatively short, 7th dorsal-fin spine 11.8-15.0 (mean 13.8) % of SL in 10.0-19.0 cm SL specimens [11.8-22.3 (15.1) % of SL in all examined specimens (3.40-3.37 cm SL)]; the last 3 dorsal-fin spines are relatively short [10th dorsal fin spine 6.2-8.0 (7.2) % of SL, 11th (penultimate) dorsal-fin spine 5.1-6.4 (5.8) % of SL, 12th (posteriormost) dorsal-fin spine 5.5-7.5 (6.4) % of SL in 10.0-19.0 cm SL specimens] [5.8-14.5 (7.9) % of SL, 4.3-10.6 (6.4) % of SL and 4.7-9.6 (6.7) % of SL, respectively, in all examined specimens]; 2nd to 4th anal-fin spines are relatively short [2nd anal-fin spine length 5.1-6.7 (5.6) % of SL, 3rd anal-fin

spine length 12.9-15.8 (14.2) % of SL, 4th anal-fin spine length 10.5-13.4 (11.8) % of SL in 10.0-19.0 cm SL specimens] [4.1-9.0 (5.9) % of SL, 11.2-19.0 (14.3) % of SL and 9.2-14.3 (11.6) % of SL, respectively, in all examined specimens]; with a relatively long caudal peduncle, length 10.5-13.3 (12.1) % of SL in 10.0–19.0 cm SL specimens [10.5-14.1 (12.1) % of SL in all examined specimens]; the last dorsal-fin spine is fused to the 1st dorsal-fin soft ray, separation between spine and ray about half that between bases of former and penultimate dorsal-fin spine; 1st body scale row usually below 2nd dorsal-fin spine base (86%), rarely between bases of 1st and 2nd dorsal-fin spines (12%) or 1st dorsal fin spine base (2%); ventral portion of the maxilla is not expanded ventrally, even in large specimens; body scales are with relatively few well-developed, widely separated spinules and a relatively high number of less developed (young) spinules in large specimens > ca. 10.0 cm SL. Colouration: no white bands or spots laterally on body (occasionally white spots in specimens < 10.0 cm SL); a dark red blotch on uppermost part of pectoral-fin base (Ref. 119380).

Ease of Identification

Meristic characteristics of Ostichthys japonicus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 27 - 29
Scales in lateral series
Scale rows above lateral line 3.5 - 3.5
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
Finlets No. Dorsal   
Ventral  
Spines total 11 - 12
Soft-rays total 12 - 14
Adipose fin

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   15 - 18
Pelvics Attributes  
Position    
Spines     
Soft-rays   
(e.g. 9948)
(e.g. oophagy)
Back to Search
Comments & Corrections
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17