part2. Furcina ishikawae サラサカジカ (알롱횟대?) Genus Furcina, Early Juvenile Life History

Genus Furcina, Early Juvenile Life History
part1. Furcina osimaeキヌカジカ (무늬횟대?)
• Genus Furcina, Early J...
part2. Furcina ishikawae サラサカジカ (알롱횟대?)
Encountered by observing Ichthyoplankton using fishing light in the surface layer.
Ulsan,,Korea,,2023
late-pelagic stage individuals,,rearing in home aquarium,,
Materials for,, Early Juvenile Life History,,Genus Furcina Jordan & Starks, 1904
+Genus Furcina Jordan & Starks, 1904
-Furcina ishikawae Jordan & Starks 1904 サラサカジカ (알롱횟대?)
-Furcina osimae Jordan & Starks 1904 キヌカジカ (무늬횟대?)
(무늬횟대?)(알롱횟대?)
There are no reliable specimen-based , detailed-morphological description of these species in Korea,,
just Key to the genera&species by Kim et al.,1992.
Ik-Soo Kim et al.,1992.
Synopsis of the Family Cottidae ( Pisces : Scorpaeniformes ) from Korea
+case12. (check D/A count),,F. ishikawae(usual suspect;meristic C&pigmentation)
,,but,, questionable size ,,
-case12.transparent individual :16mmTL
-case13.juvenile coloured individual :13mmTL (id confirmed individual:F. ishikawae)
failed in long-term rearing,,Pseudoblennius species?
00:00-00:10 20230411 ca.16mmTL
00:11-00:32 20230419
+case13. F. ishikawae (check D/A count))
00:33-00:43 20230327 lateral ca.13mmTL
00:44-00:51 20230327 dorsal
00:52-00:59 20230327 frontal
01:00-01:10 20230329
01:11-01:43 20230405
01:44-02:07 20230419
02:08-02:17 20230521 lateral ca.20mmTL
02:18-02:26 20230521 dorsal
02:27-02:42 20230606 29mmTL
+comparison,,F. ishikawae vs. F. osimae juveniles,,dorsal view
F. ishikawae(case13 individual),,F. osimae(one of case4-6 individual)
02:43-02:50 left :F. ishikawae right:F. osimae 20230425 size :15-20mmTL
02:51-02:56 upper: F. ishikawae lower:F. osimae 20230425 size :15-20mmTL
02:57-03:12 lower:F. ishikawae upper:F. osimae 20230606 Both sizes are,,ca.30mmTL
case14. F. ishikawae?(or Pseudoblennius sp.?)
03:13-03:23 20230410 ca.15mmTL
case15. Furcina sp.
03:24-03:45 20230403 ca.14mmTL
case16. (possibly) Pseudoblennius sp.(simillar to F. ishikawae) fail in long-term rearing
03:46-04:02 20230318 lateral ca.13mmTL
04:03-04:14 20230318 dorsal
04:15-04:20 20230323
case17. Pseudoblennius sp. /F. ishikawae ?
04:21-04:51 20230223 size:not check
+early laval stage
case1. possibly Furcina / Pseudoblennius sp.
04:52-05:17 20230320 ca.5mmTL(coloured body part 2mm)
case2. possibly Furcina /Pseudoblennius/Ocynectes sp.
05:18-05:47 20230324 ca.6mmTL(coloured body part 2mm)
case3. possibly Furcina /Pseudoblennius sp.
05:48-05:59 20230314 ca.7mmTL
ref.
Aya Yamazaki et al.,2015.
Annotated Checklist of Fishes Sighted while Diving off the Shimokita Peninsula, Northern Japan
Family Cottidae by J.Kojima ,M.Shiogaki
(IN) Muneo Okiyama edit. 2014. An atlas of early stage fishes in Japan. 2nd edition