Gary Bell/ Oceanwide / Scarlet Cleaner Shrimp (Lysmata amboinensis) cleaning mouth of Tomato Grouper (Cephalopholis sonnerati), Great Barrier Reef, Australia

Gary Bell/ Oceanwide / Scarlet Cleaner Shrimp (Lysmata amboinensis) cleaning mouth of Tomato Grouper (Cephalopholis sonnerati), Great Barrier Reef, Australia

Fred Bavendam / Scarlet Cleaner Shrimp (Lysmata amboinensis) working on a Tomato Grouper (Cephalopholis sonnerati), Milne Bay, Papua New Guinea

Gary Bell/ Oceanwide / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) cleaning mouth and gills of Tomato Grouper (Cephalopholis sonnerati), Great Barrier Reef, Australia

Nature Production / Tomato grouper (Cephalopholis sonnerati), Chichijima, Ogasawara Islands UNESCO World Heritage Site, Japan

Juergen Freund / Tomato grouper (Cephalopholis sonnerati) portrait, Bali, Indonesia.

Juergen Freund / Tomato grouper (Cephalopholis sonnerati) on coral reef, Bali, Indo-pacific.

Fred Bavendam / Tomato Grouper (Cephalopholis sonnerati) getting cleaned by Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Doug Perrine / Tomato grouper / cod {Cephalopholis sonnerati} being cleaned by Humback cleaner shrimp {Lysimata amboiensis} Bali, Indonesia

Fred Bavendam / Scarlet Cleaner Shrimp (Lysmata amboinensis) working on a Tomato Grouper (Cephalopholis sonnerati), Milne Bay, Papua New Guinea

Fred Bavendam / Scarlet Cleaner Shrimp (Lysmata amboinensis) working on a Tomato Grouper (Cephalopholis sonnerati), Bali, Indonesia

Doug Perrine / Tomato grouper {Cephalopholis sonnerati} being cleaned by shrimp & wrasse, (Non-ex).