14 Mar 2018 10:20 CET

Identification state

by Francois Libert
Francois Libert's picture

Hello Bernat,
Arothron multilineatus is actually restricted to the Ryukyu islands.
This looks a lot like A. stellatus, but with lines instead of spots, so I'm not sure about the ID. It might also be a hybrid, since Arothron species are known to hybridize in the wild. I believe further investigation is required, I'll try to look into it asap....

Bernat Garrigós's picture

François. I sent the photo to Dr. Matsuura who described the species in 2016 and he confirmed the identification. Yes, the species was identified from some Japanese catches but he recognizes the species to be more widespread.

"Distribution. Arothron multilineatus has been observed by SCUBA divers at depths from 10 m to 25 m on the sandy bottom along the south coast of Amami-oshima Island of the Ryukyu Islands. Judging from collection localities of the type specimens and
underwater photographs taken in the Ryukyu Islands (Kimiaki Ito), Mozambique (Angela Lund) and the Red Sea (Richard Field), and a literature record from the Philippines (Schroeder 1980), Arothron multilin- eatus is widely distributed in the tropical Indo-West Pacific."

Francois Libert's picture

Thank you for the info, I had not checked the description itself and relied on the Catalog of Fishes for my reply. I am now checking with the CoF editors why their information would differ from the description contents.

Francois Libert's picture

Cof confirmed that the Arothron multilineatus entry was incorrect and will be fixed in October.
Therefore I agree with your initial ID :)

Bernat Garrigós, SC73. Accessible at https://sealifecollection.org/p/73.

Extended version
Bernat Garrigós, SC73. Photo of Arothron multilineatus. Accessible at https://sealifecollection.org/p/73.

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