Juergen Freund / Yellow-ribbon sweetlips (Plectorhinchus polytaenia) surrounded by dense shoal of glassy sweepers (Pempheris schomburgki). North Raja Ampat, West Papua, Indonesia

Georgette Douwma / Coral reef scenery with Gorgonian and shoal of Pygmy / Glassy sweepers (Parapriacanthus guentheri) Egypt, Red Sea

Dan Burton / Glassy sweepers {Parapriacanthus guentheri} on coral reef, Red Sea, Egypt

Solvin Zankl / Shoal of Glassy sweepers (Pempheris schomburgki) Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Jeff Rotman / Glassy sweepers (Parapriacanthus ransonetti) schooling at twilight, Red Sea, Egypt

Juergen Freund / Indonesian wobbegong (Orectolobus leptolineatus) with Glassy Sweeper Glass fish (Pempheris schomburgki) Raja Ampat, West Papua, Indonesia

Juergen Freund / Shoal of Glassy sweepers (Pempheris schomburgki) and anthias on coral reef, Great Barrier Reef

Juergen Freund / Shoal of Glassy sweepers (Pempheris schomburgki) and anthias on coral reef, Great Barrier Reef

GEORGETTE DOUWMA / Coral reef scenery with Gorgonian and shoal of Pygmy / Glassy sweepers (Parapriacanthus guentheri) Egypt, Red Sea.

Jeff Rotman / Diver observes Glassy Sweepers (Parapriacanthus guentheri) schooling at cave entrance, Red Sea. Model released.

Jeff Rotman / Glassy Sweepers (Parapriacanthus guentheri) schooling at cave entrance with sunlight above. Egypt, Red Sea.

Pete Oxford / Glassy sweepers taking cover (Parapriacanthus guentheri) Poivre Island, Seychelles