Alan Murphy/ BIA / Black Phoebe (Sayornis nigricans), California

Glenn Bartley / Black Phoebe (Sayornis nigricans), Ecuador

E.J. Peiker / Black Phoebe (Sayornis nigricans), Arizona

E.J. Peiker / Black Phoebe (Sayornis nigricans) carrying a small fish, an unusual diet item, Arizona

E.J. Peiker / Black Phoebe (Sayornis nigricans), Arizona

Marie Read / Black Phoebe (Sayornis nigricans), adult, California, USA, March.

Rolf Nussbaumer / Black Phoebe {Sayornis nigricans} Bosque de Paz, Central Valley, Costa Rica

Pete Oxford / Black Phoebe (Sayornis nigricans) perching on mossy branch, Mindo Cloud Forest, Ecuador

John Chan / Black phoebe (Sayornis nigricans) hunts at a trash flow, Bolsa Chica Ecological Reserve, Southern California, USA, December.

John Chan / Black phoebe (Sayornis nigricans) stunning prey against a log, Bolsa Chica Ecological Reserve, Southern California, USA, October.

John Chan / Black phoebe (Sayornis nigricans) tracking and lunging at flying insects from a hunting perch, Bolsa Chica Ecological Reserve, Southern California, USA, September.

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) school underwater, Great Barrier Reef, Queensland, Australia

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) school, Great Barrier Reef, Queensland, Australia

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) school, Loloata Resort, Papua New Guinea

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) school, Loloata Resort, Papua New Guinea

Franco Banfi / Oblique-banded sweetlips (Plectorhinchus lineatus) Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Linda Pitkin / Mixed school of Ribbon Sweetlips (Plectorhinchus polytaenia), and Diagonal-banded Sweetlips (Plectorhinchus lineatus) Arborek, Dampier Strait, Raja Ampat, West Papua, Indonesia, March 2016

Linda Pitkin / Mixed school of Ribbon Sweetlips (Plectorhinchus polytaenia), and Diagonal-banded Sweetlips (Plectorhinchus lineatus) Arborek, Dampier Strait, Raja Ampat, West Papua, Indonesia, March 2016

Pascal Kobeh / Two Bluestreak cleaner wrasses (Labroides dimidiatus) cleaning, Oblique / diagonal banded sweetlips (Plectorhinchus lineatus) New Caledonia. Pacific Ocean.

Pascal Kobeh / Two Bluestreak cleaner wrasses (Labroides dimidiatus) cleaning, Oblique / diagonal banded sweetlips (Plectorhinchus lineatus) New Caledonia. Pacific Ocean.

Pascal Kobeh / Bluestreak cleaner wrasse (Labroides dimidiatus) just swimming out of mouth of Oblique / Diagonal banded sweetlips (Plectorhinchus lineatus) whilst cleaning / feeding, New Caledonia. Pacific Ocean.

Pascal Kobeh / Bluestreak cleaner wrasse (Labroides dimidiatus) just swimming out of mouth of Oblique / Diagonal banded sweetlips (Plectorhinchus lineatus) whilst cleaning / feeding, New Caledonia. Pacific Ocean.

Pascal Kobeh / Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning Diagonal banded sweetlips (Plectorhinchus lineatus) New Caledonia. Pacific Ocean.

Pascal Kobeh / Bluestreak cleaner wrasse (Labroides dimidiatus) just swimming out of mouth of Oblique / Diagonal banded sweetlips (Plectorhinchus lineatus) whilst cleaning / feeding, New Caledonia. Pacific Ocean.

Pascal Kobeh / Bluestreak cleaner wrasse (Labroides dimidiatus) just swimming out of mouth of Oblique / Diagonal banded sweetlips (Plectorhinchus lineatus) whilst cleaning / feeding, New Caledonia. Pacific Ocean.

Pascal Kobeh / Diagonal-banded / Yellowbanded sweetlips (Plectorhinchus lineatus) cleaning Spotted unicornfish (Naso brevirostris) Palau. Philippine Sea.

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) near coral reef, Milne Bay, Papua New Guinea

GEORGETTE DOUWMA / Lined / Oblique-banded sweetlips {Plectorhinchus lineatus} Sipadan, Malaysia

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) portrait, Great Barrier Reef, Queensland, Australia

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) school, Loloata Resort, Papua New Guinea

Fred Bavendam / Diagonal-banded Sweetlips (Plectorhinchus lineatus) school, Loloata Resort, Papua New Guinea

Constantinos Petrinos / Lined / Oblique-Banded sweetlips {Plectorhynchus lineatus} Lembeh Strait,

Alex Mustard / Diagonal-banded sweetlips (Plectorhinchus lineatus) head portrait, Raja Ampat, West Papua, Ceram Sea, Pacific Ocean.

Alex Mustard / Mixed school of diagonal-banded sweetlips (Plectorhinchus lineatus) and ribbon sweetlips (Plectorhinchus polytaenia) gather above plate corals, with convict blennies (Pholidichthys leucotaenia). Saund...

Alex Mustard / Mixed school of large fish, incliuding lined rabbitfish (Siganus lineatus), diagonal-banded sweetlips (Plectorhinchus lineatus) onespot snapper (Lutjanus monostigma), oriental sweetlips (Plectorhinchu...

David Fleetham / Lined sweetlips (Plectorhinchus lineatus) with two cleaner wrasse (Labroides dimidiatus) inspecting its gills, Indonesia.

Alex Mustard / A mixed school of diagonal-banded sweetlips (Plectorhinchus lineatus) and ribbon sweetlips (Plectorhinchus polytaenia) gather above plate corals, with convict blennies (Pholidichthys leucotaenia). Sau...