Chaetodon speculum トノサマダイ 흑점나비고기 Early Juvenile Life History

Encountered by observing Ichthyoplankton using fishing light in the surface layer.
Ulsan,,Korea,,2023
Tholichthys stage individuals,,rearing in home aquarium,,
I have met four individuals of this species and raised them all in my area,
The metamorphosis size of this species is smaller than that of other Chaetodon species,
probably all species of Subgenus Tetrachaetodon's metamorphosis size are small?
+metamorphosis
here metamorphosis refer as,,Tholichthys stage - transformed - juvenile stage
2 individuals
Ind.1.
[phone]mmTL(11mmSL)
00:00-01:07 fronto-lateral
01:08-02:28 frontal
02:29-02:56 dorsal
[phone] ca.14-5mmTL
02:57-03:18
[phone]mmTL
03:19-03:52 lateral
03:53-04:34 dorso-lateral
04:35-04:57 forehead shot
[phone]mmTL
04:58-06:00 lateral
Ind.2. +note: Hydrichthys sp. (Parasitic hydroid)
[phone]mmTL(10mmSL)
06:01-06:48 lateral
06:49-07:36 dorso-lateral
07:37-07:52 dorsal 2individual shot (with Ind.1.)
[phone]mmTL
07:53-08:10
[phone]mmTL
08:11-08:20 lateral
08:21-08:42 dorso-lateral
[phone]mmTL
08:43-09:06
Material for,, Early Juvenile Life History,,Genus Chaetodon Linnaeus, 1758​ (Subgenus Tetrachaetodon​)
Family Chaetodontidae Rafinesque 1815 (butterflyfishes) 나비고기과 チョウチョウウオ科
Genus Chaetodon Linnaeus, 1758​
+Subgenus Tetrachaetodon Weber and de Beaufort, 1936​ (sensu Burgess, 1978 + Blum,1988)
-Chaetodon andamanensis Kuiter & Debelius 1999 +sibling species of C. plebeius
-Chaetodon bennetti Cuvier 1831 ウミヅキチョウチョウウオ
-Chaetodon plebeius Cuvier 1831 スミツキトノサマダイ
-Chaetodon speculum Cuvier 1831 トノサマダイ 흑점나비고기
-Chaetodon zanzibarensis Playfair 1867
Burgess, W. E. 1978
Butterflyfishes of the World. A monograph of the family Chaetodontidae.
Blum, S .D . 1988 .
Osteology and phylogeny of the Chaetodontidae (Pisces : Perciformes) .