アマミホシゾラフグ
A new pufferfish of the genus Torquigener that builds “mystery circles” on sandy bottoms in the Ryukyu Islands Japan(Actinopterygii: Tetraodontiformes: Tetraodontidae), Keiichi Matsuura, Ichthyological Research, January 2015, Volume 62, Issue 2, pp 207-212