Morphology Data of Istigobius nigroocellatus
Identification keys
Abnormalities
Main Ref. Murdy, E.O. and D.F. Hoese, 1985
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs protruding genital papilla (m)
Different appearance always different morphology between mature adults
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section circular
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth sub-terminal/inferior
Type of scales cycloid and ctenoid scales
Diagnosis

Upper pectoral fin rays entire. 3 spots forming a `V' on caudal base; black spot basally between dorsal spines V-VI; pectoral base, cheek and operculum with many dusky melanophores; pelvic fins black. Longitudinal black bar off distal part of upper jaw. Trunk scales ctenoid, predorsal cycloid. In male, anal fin dusky and when appressed, reaching or almost reaching caudal fin, appressed dorsal fin overlapping caudal fin. In female, appressed anal and dorsal fins extending within 1-2 scales from caudal (Ref. 420); longitudinal scale series 30-32; depth of body 4.8-5.8 in SL (Ref. 90102).

Ease of Identification

Meristic characteristics of Istigobius nigroocellatus

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 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal 10 - 10
total 26 - 26

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 7 - 7
Soft-rays total 10 - 12
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 9 - 11

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   18 - 19
Pelvics Attributes  joint, cup-like
Position    thoracic  before origin of D1
Spines     1
Soft-rays   5 - 5
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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