Black Water Dive®　-　ブラックウォーターダイブ: メギス科稚魚

写真家峯水亮がプロデュースする、Black Water Dive^®のオフィシャルサイトです。（たまにブルーウォーターの写真も掲載します）潮や時間・場所をよみながら、高演色の水中ライトを夜の海に仕掛けて潜ります。見られる生物は日中のダイビングや普通のナイトダイビングではまず見ることのない、稚魚や幼生など魅力的な生き物ばかり。このサイトでは開催した時の様子や見られた生物などの他、今後のBWDスケジュールもご紹介いたします。 "BWD"はBlack Water Dive^®の略です。Black Water Dive^®は写真家峯水亮の登録商標(商標第5812594号)です。

This is official site of Black Water Dive® produced by photographer Ryo Minemizu. Black Water Dive® is a kind of night diving. We are setting up underwater lights of high-color rendering on the sea bottom of night that while considering tides, times, places. The creature which appears is mainly juveniles and larvae. All is fascinating, and it's not to be seen at daytime or regular night diving. It will be your first experience. This site will introduce the state of the event and the creatures seen and also future of BWD schedules. *"BWD"stands for Black Water Dive®.*Black Water Dive® is a registered trademark of Ryo Minemizu.

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2016年8月24日水曜日

Brief report to Larva of Pseudochromis sp. (Perciformes, Pseudochromidae)

Somehow, larva of the Pseudochromidae has been no report so far at Japan. Pseudochromidae has been missing also at *Okiyama, 2014.

This photo was shooting at Iriomote Island of Okinawa to early June 2016.

TL; about 25mm. Depth about 3m.

Meristic Characters - D Ⅲ, 22; A Ⅲ 13; P¹ 17(this photo)

Pigment - This larva has orange pigment, it's dispersed throughout over the head and each scale, base of dorsal and anus fin, caudal fin base.

Study - Maybe, I'm thinking either species of Genus Pseudochromis from the Meristic character. Genus Pseudochromis are known six species of the following in sea of Japan. Above all, it seems to be one of the following two.

Pseudochromis tapeinosoma Bleeker, 1853 - (Japanese name : Katsuiro-nise suzume)
D Ⅲ, 21-23; A Ⅲ 12-14; P¹ 17-19; LLp 20-27+4-11; Pred.S 10-15.

Pseudochromis cyanotaenia Bleeker, 1857 - (Japanese name : Ryukyu-nise suzume)
D Ⅲ, 21-23; A Ⅲ 12-14; P¹ 16-20; LLp 23-31+6-11; Pred.S 11-19.

According to the Jeffrey M. Leis & Brooke M. Carson-Ewart(ed.), 2004. Other, following species has similar Meristic characters in Pseudochromidae. but, both those are not been reported from Japan.

genus Assiculus
Assiculus punctatus Richardson, 1846

genus Cypho
Cypho purpurascens (De Vis, 1884)
Cypho zaps Gill, 2004

REFERENCES:
Jeffrey M. Leis & Brooke M. Carson-Ewart(ed.), 2004. The larvae of Indo-Pacific coastal fishes : an identification guide to marine fish larvae. Brill Academic Publication, London. Pp,850. (second Revised).

Nakabo, T. (ed.), 2013. Fishes of Japan with pictorial keys to the species, third edition. Tokai University Press, Kanagawa, Pp, 2428. (3-Volume Set) (in Japanese).

Okiyama M. (ed), 2014. An Atlas of Early Stage Fishes in Japan Second Edition Tokai University Press, Japan. :Pp,1912. (in Japanese).

FAMILY Details for Pseudochromidae - Dottybacks - FishBase
http://www.fishbase.org/summary/FamilySummary.php?ID=291

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