Morphology Data of Chaetodon semeion
Identification keys
Abnormalities
Main Ref. Burgess, W.E., 1978
Appearance refers to Male; Female
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance males alike females
Different colors different colors in juveniles and adults
Remarks Black stripe running through the eye becomes reduced as the fish increases in size, until there is only a grey patch above the orbits.

Descriptive characteristics of juvenile and adult

Striking features striking type of mouth
Body shape lateral short and / or deep
Cross section compressed
Dorsal head profile clearly concave
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales ctenoid scales
Diagnosis

The abdominal region of females is noticeably thick set. Body is golden yellow; base of the posterior portions of the dorsal and anal fins black; a prominent vertical black bar running across the eye; diagonal rows of black dots on the sides. A filament originating from the soft portions of the dorsal fin rays trails posteriorly (Ref. 4855). Snout length 2.4-2.9 in HL. Body depth 1.6-1.9 in SL (Ref. 90102).

Ease of Identification

Meristic characteristics of Chaetodon semeion

Lateral Lines 1 Interrupted: No
Scales on lateral line 33 - 39
Pored lateral line scales 28 - 35
Scales in lateral series
Scale rows above lateral line 6 - 8
Scale rows below lateral line 13 - 16
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 12 - 17
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes other
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 13 - 14
Soft-rays total 23 - 26
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 19 - 22

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   14 - 16
Pelvics Attributes  more or less normal
Position    thoracic  beneath origin of D1
Spines     0
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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