Gary Bell/ Oceanwide / Painted Sweetlips (Diagramma pictum) in Slender Cardinalfish (Rhabdamia gracilis) school, Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Painted Sweetlips (Diagramma pictum) in Slender Cardinalfish (Rhabdamia gracilis) school near Double-headed Maori Wrasse (Cheilinus undulatus), Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Double-headed Maori Wrasse (Cheilinus undulatus), Painted Sweetlips (Diagramma pictum), and Slender Cardinalfish (Rhabdamia gracilis) school, Great Barrier Reef, Queensland, Australia

Gary Bell/ Oceanwide / Spotted Wobbegong (Orectolobus maculatus) surrounded by Slender Cardinalfish (Rhabdamia gracilis) school, Solitary Islands Marine Park, New South Wales, Australia

Francis Abbott / Giant moray eel (Gymnothorax javanicus) and shoal of Luminous cardinalfish / Glassfish (Rhabdamia gracilis), Similan Islands, Thailand.

Francis Abbott / Bluering angelfish (Pomacanthus annularis) with a shoal of Luminous cardinalfish / Glassfish (Rhabdamia gracilis) shelter within a small cave from the strong currents that sweep Ko Tachai island in th...

Francis Abbott / Bluering angelfish (Pomacanthus annularis) with a shoal of Luminous cardinalfish / Glassfish (Rhabdamia gracilis) shelter within a small cave from the strong currents that sweep Ko Tachai island in th...

Fred Bavendam / Pygmy Sweeper (Parapriacanthus ransonneti) and Slender Cardinalfish (Rhabdamia gracilis) schooling near a Sea Fan, Andaman Sea, Thailand