Key to the Species of Nezumia in Taiwan

1a. V 8–10; 1D usually overall dusky to blackish, without prominent black blotch........... 2

1b. V 13–17; 1D with distinct black distal tip contrasting with pale proximal part of fin...... 4

2a. Underside of head mostly scaled except under snout; length second spinous 1D ray usually <HL; body scales with narrowly triangular to broadly lanceolate spinules.............. 3

2b. Underside of head almost entirely naked; length second spinous 1D ray> 95% HL; body scales densely covered with needle-like spinules................................ N. spinosa

3a. V 8 or 9, rarely 10; underside of snout naked only along median line........... N. proxima

3b. V 10; underside of snout virtually entirely naked......................... N. cf. coheni 4a. V 13–15; scale rows below mid-1D 7.0–7.5, below 2D origin 8.5–10.0; length outer V ray 66–127% HL........................................................ N. evides

4b. V 13–17; scale rows below mid-1D 8.0–9.5, below 2D origin 10.0–13.0; length outer V ray 68–81% HL...................................................... N. condylura