Page 151 - 《水产学报》2026年第2期

2 期 水 产 学 报 50 卷

Nc Un1
Na
Hy5
Hy4
Hy2 Hy3
Ha Fr
Hy1 Ph Hs
0.5 mm 1 0.5 mm 2 0.25 mm 3 0.5mm 4
Ep1+2
U1 U2 Ep2 Ep3 Un3
Ns Un2 o
PL Ep1
Hy6 Na1
PU1

0.25 mm 5 0.5 mm 6 0.25 mm 7 1 mm 8
Plate Ⅰ Development of the caudal fin complex
(1) 5.55 mm NL; (2) 6.08 mm NL; (3) 6.32 mm NL; (4) 7.38 mm NL; (5) 9.58 mm SL; (6) 10.24 mm SL; (7) 13.10 mm SL; (8) 34.56 mm SL. Ep.
epural; Fr. fin ray; Hy. hypural; Ha. haemal arch; Hs. haemal spine; Na. neural arch; Ns. neural spine; Ph. parhypural; PL. pleurostyle; PU. preural centra;
U. ural centra; Un. uroneural.

Fr
Pr

0.25 mm 1 0.25 mm 2

Fr
Pr Sb
Dr
Ap
Dr

Sb
Pr

1 mm 3 1 mm 4
Plate Ⅱ Development of dorsal fin supports
(1) 5.20 mm NL; (2) 5.79 mm NL; (3) 18.08 mm SL; (4) 31.07 mm SL. Ap. anterior process; Dr. distal radial; Pr. proximal radial; Sb. stay bone.

same time, a supernumerary distal radial was observed proceeded posteriorly in specimens larger than 18.08
emerging from the anteriormost distal radial, becom- mm SL. Distal radials ossified last from the anterior to
ing fully apparent by 31.07 mm SL. At 31.07 mm SL,
posterior end (Plate Ⅱ-4).
the anteriormost proximal radial carries a distal radial
2.3 Anal fin development
that bears a single fin ray: fin ray count is 14. Ossifica-
tion of the proximal radials commenced anteriorly and Anal fin development starts with an anlage in

https://www.china-fishery.cn 中国水产学会主办 sponsored by China Society of Fisheries
4