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Table 7 Presence or absence of first dorsal fin (two spines) in Triodon macropterus. Tyler (1967) showed that a specimen (448.3 mm SL) collected from the Volcano Islands, south of the Ogasawara Islands, had a single spine

From: Taxonomy and systematics of tetraodontiform fishes: a review focusing primarily on progress in the period from 1980 to 2014

First dorsal fin

 

Present

Absent

Indian Ocean

 

9 + 5* = 14

West-Pacific

19 + 12* = 31

1*

  1. * Data from Tyler (1967)
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