Ichthyological Research

, Volume 62, Issue 2, pp 207–212

A new pufferfish of the genus Torquigener that builds “mystery circles” on sandy bottoms in the Ryukyu Islands, Japan (Actinopterygii: Tetraodontiformes: Tetraodontidae)

Full Paper

DOI: 10.1007/s10228-014-0428-5

Cite this article as:
Matsuura, K. Ichthyol Res (2015) 62: 207. doi:10.1007/s10228-014-0428-5


Torquigener albomaculosus sp. nov. is described based on two specimens collected from sandy bottoms at depths of 15 and 18 m along the south coast of Amami-oshima Island in the Ryukyu Islands. This new species is distinguished from all other species of Torquigener by the following unique combination of characters: dorsal-fin rays 9 (10); anal-fin rays 6; pectoral-fin rays 16 (dorsalmost ray nubbin-like and rudimentary); vertebrae 8 + 11 = 19; no solid, dark, longitudinal stripe nor longitudinal rows of dark spots on the mid-side of body from behind pectoral fin to caudal-fin base; no vertical markings on cheek; dorsal half of head and body covered with fine brown reticulations and many white spots; ventral half of head and body silvery white covered by many white spots from chin to above anal-fin origin; dorsal rim of eye light yellow; and many two-rooted spinules on head and body. Males of T. albomaculosus build unique circles as spawning nests, these being 2 m in diameter on sandy bottoms at depths from 10 to 30 m at Amami-oshima Island.


New pufferfish Torquigener Tetraodontiformes mystery circles Ryukyu Islands 

Copyright information

© The Ichthyological Society of Japan 2014

Authors and Affiliations

  1. 1.Department of ZoologyNational Museum of Nature and ScienceTsukubaJapan

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