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Table 2 Pigmentation stages of glass eels of Anguilla japonica and Anguilla marmorata collected from various rivers and estuaries in East Asia

From: Effects of metamorphosis timing and the larval growth rate on the latitudinal distribution of sympatric freshwater eels, Anguilla japonica and A. marmorata, in the western North Pacific

Species Sampling site Number Pigmentation stage
VA VB VIA1 VIA2 VIA3 VIA4 VIB
A. japonica a Tungkang River, Taiwan 30 28 2 0 0 0 0 0
30 24 6 0 0 0 0 0
Shuangshi River, Taiwan 30 13 17 0 0 0 0 0
30 9 16 5 0 0 0 0
Mingchiang River, China 30 24 6 0 0 0 0 0
Chyantarng River, China 30 21 9 0 0 0 0 0
Yalu River, China 30 0 1 21 7 1 0 0
Ichinomiya River, Japan 30 5 20 4 1 0 0 0
 Total   240 124 77 30 8 1 0 0
 % composition    51.7 32.1 12.5 3.3 0.4 0 0
A. marmorata Cagayan River, the Philippines 45 15 30 0 0 0 0 0
Hsiukuluan River, Taiwan 86 65 21 0 0 0 0 0
Kurio River, Japan 37 13 24 0 0 0 0 0
 Total   168 93 75 0 0 0 0 0
 % composition    55.4 44.6 0 0 0 0 0
  1. aCheng and Tzeng (1996).