Residing in Miyazaki City, Japan, Hiroyuki
is one of the authors of Angelfishes - a Comprehensive
Guide to Pomacanthidae (2003). He has written articles
for Tropical Fish Hobbyist (USA), Marine Aquarist, Fish Magazine,
Tropical Marine Aquarium, Salt & Sea (Japan), Aquaristik
(Germany), Aqua (Thailand), etc. He is also a photo and article
contributor for several websites in the USA, Germany and Japan.
Hiroyuki is currently preparing several scientific papers
and a book titled, Fairy & Flasher Wrasses.