Alex Mustard / Orange painted frogfish (Antennarius pictus) fishing. Here the frogfish is illuminated by a snooted strobe and the background sand lit with a red LED torch. Bitung, North Sulawesi, Indonesia. Lembeh S...

Solvin Zankl / Sargassum fish (Histrio histrio) in Broad-toothed gulfweed (Sargassum fluitans) Sargassum Community. Sargasso Sea, Bermuda

Solvin Zankl / Sargassumfish (Histrio histrio) swimming near Broad-toothed gulfweed (Sargassum fluitans) Sargassum Community. Sargasso Sea, Bermuda.

Magnus Lundgren / Wild Wonders of China / Sargassum frogfish (Histrio histrio), Longdong, Tawain.

Tony Wu / Hairy frogfish (Antennarius striatus) pair, male nudging spawning female's abdomen and pushing her into water column. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) male resting, lump on head and abdomen resulting from infection by Parasitic copepod (Sarcotaces pacificus). The female parasite resides within the lump where she...

Tony Wu / Hairy frogfish (Antennarius striatus) male resting, lump on head and abdomen resulting from infection by Parasitic copepod (Sarcotaces pacificus). The female parasite resides within the lump where she...

Tony Wu / Hairy frogfish (Antennarius striatus) male opening mouth, illicium / rod and esca / lure folded back on top of head. Skeleton shrimp (Caprellidae) parasites on fish's body. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) female on reef, Skeleton shrimp (Caprellidae) parasites on fish's body. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) male with esca / lure extended on illicium / rod to entice prey. Skeleton shrimp (Caprellidae) parasites on fish's body. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus), fertilized raft of eggs floating in water after spawning. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) pair after spawning, fertilized egg raft between the fish. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) pair, female spawning, releasing egg raft. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) female with abdomen swollen with eggs resting on reef, 16 hours prior to spawning. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) female releasing raft of eggs during spawning, male fertilizing eggs below. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) pair prior to spawning. Male positioned below female to push her into water column. Female is swollen to twice normal size in preparation for release of eggs maki...

Tony Wu / Hairy frogfish (Antennarius striatus) pair prior to spawning. Male positioned below female to push her into water column. Female is swollen to twice normal size in preparation for release of eggs maki...

Tony Wu / Hairy frogfish (Antennarius striatus) pair in reef, approximately 15 hours prior to spawning. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) pair on reef approximately 22 hours prior to spawning, female's abdomen swollen with eggs. Ariake Sea, Japan.

Georgette Douwma / Striped or Hairy frogfish (Antennarius striatus) pair. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Striped or Hairy frogfish (Antennarius striatus). Lembeh Strait, North Sulawesi, Indonesia.

Magnus Lundgren / Wild Wonders of China / Sargassum frogfish (Histrio histrio) small (5 cm) juvenile, long exposure of darting movement caused by forcing water through gills. Longdong, Taiwan. Lundgren

Magnus Lundgren / Sargassum frogfish (Histrio histrio) juvenile reflected in the water surface, Longdong, Tawain. Magnus

David Fleetham / Sargassumfish (Histrio histrio) two living in floating polypropylene rope. Hawaii. Pacific ocean.

Magnus Lundgren / Wild Wonders of China / Sargassum frogfish (Histrio histrio) hunting at night, Longdong, Taiwan. Lundgren

Linda Pitkin / Painted frogfish (Antennarius pictus) Lembeh Strait, North Sulawesi, Indonesia.

Alex Mustard / Portrait of a Giant frogfish (Antennarius commersoni) waiting in ambush hidden amongst sponges growing on a coral reef. Dauin Marine Protected Area, Dumaguete, Negros, Philippines. Bohol Sea, tropical...

Alex Mustard / Long exposure portait of an Orange painted frogfish (Antennarius pictus). Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Tropical West Pacific Ocean.

Alex Mustard / Portrait of the face of a Hairy frogfish (Antennarius striatus). Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Tropical West Pacific Ocean.

Alex Mustard / Painted frogfish (Antennarius pictus) hides amongst rope sponges on a coral reef. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / RF - Portrait of an Orange painted frogfish (Antennarius pictus) on an orange sponge. North Sulawesi.

David Hall / Striated frogfish (Antennarius striatus), gravid female and small orange male. Pantar, Indonesia; November, 2006.

Alex Mustard / Giant frogfish (Antennarius commersoni). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Pascal Kobeh / Sargassumfish / Sargassum anglerfish (Histrio histrio) hiding in a Sargassum seaweed, Sulu sea, Philippines

Pascal Kobeh / Head of a Giant anglerfish / frogfish (Antennarius commersoni / commerson), Sulu sea, Philippines

Shane Gross / Giant frogfish / Commerson's frogfish (Antennarius commerson) Sombrero Island, Anilao, Philippines.

Pascal Kobeh / Painted frogfish / anglerfish (Antennarius pictus) Sulu Sea, Philippines.Small repro only

Pascal Kobeh / Striated frogfish / anglerfish (Antennarius striatus) luring to attract its prey. Sulu Sea, Philippines.

Pascal Kobeh / Pair of Striated frogfish / anglerfish (Antennarius striatus) Sulu Sea, Philippines.

Alex Mustard / Diver with Yellow giant frogfish (Antennarius commersoni) on a coral reef. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea. Model released.

Alex Mustard / Hairy frogfish (Antennarius striatus) in a current. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Magnus Lundgren / Wild Wonders of China / Painted frogfish (Antennarius pictus) Basalt Island, Sai Kung District, Hong Kong, CHina.

Magnus Lundgren / Wild Wonders of China / Painted frogfish (Antennarius pictus) Basalt Island, Sai Kung District, Hong Kong, China.

David Fleetham / Commerson's frogfish (Antennarius commerson) camouflaged against coral on bow of Alma Jane wreck, diver in background. Off Sabang Beach, Puerto Galera, Mindoro, Philippines. April 2017. Model rele...

David Fleetham / Painted frogfish (Antennarius pictus) with first dorsal spine and lure extended to attract prey. Dumaguete, Philippines.

David Fleetham / Commerson's frogfish (Antennarius commerson) camouflaged against surroundings. Hawaii.

Tony Wu / Hairy frogfish (Antennarius striatus) opening its mouth whilst searching for food. Lembeh Strait, Celebes Sea, North Sulawesi, Indonesia.

Tony Wu / Hairy frogfish (Antennarius striatus) examining flatfish as a potential meal. Lembeh Strait, Celebes Sea, North Sulawesi, Indonesia.