David Fleetham / Fire Dartfish / Fire Goby (Nemateleotris magnifica) against colourful coral. Fiji's outer reef.

Alex Mustard / Spotlight goby (Gobiosoma louisae) looking out from inside a Yellow tube sponge (Aplysina fistularis), growing on a coral reef. Bloody Bay Wall, Little Cayman, Cayman Islands, British West Indies. Car...

Alex Mustard / Common ghostgoby (Pleurosicya mossambica) with another fish in its mouth on soft coral (Dendronephthya sp.). Tulamben, Bali, Indonesia. Java Sea

Alex Mustard / Large whip goby (Bryaninops amplus) with a parasitic copepod (with two trailing egg ribbons) perched on Red whip coral. Whale Rock. Fiabacet Islands, Misool, Raja Ampat, West Papua, Indonesia. Ceram S...

Alex Mustard / Glasseye snapper (Heteropriacanthus cruentatus) head portrait with a cleaning Goby (Gobiosoma genie) East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Todd Mintz / Sharknose cleaner goby (Gobiosoma evelynae) pair sheltering in hard coral, Netherlands Island, Dutch Antillies, Caribbean

Juergen Freund / Two Twinspot / Crabeye gobies (Signigobius biocellatus) West New Britain, Papua New Guinea.

Juergen Freund / Two whip coral gobies (Bryaninops yongei) on a black coral sea whip. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Maiden gobies (Valenciennea puellaris) "kissing", Red Sea, Egypt

Alex Mustard / Lemon coral goby (Gobiodon citrinus) shelters in the branches of a coral (Acropora sp.). Gubal Island, Egypt. Strait Of Gubal, Red Sea.

Alex Mustard / Convict blennies (Pholidichthys leucotaenia) swim across a coral reef with seafan (Melithaea sp.) behind. Misool, Raja Ampat, West Papua, Indonesia. Misool Marine Protected Area. Ceram Sea. Tropical W...

Alex Mustard / Common ghost goby (Pleurosicya mossambica) hiding in the branches of a sea pen (Pteroeides sp.). Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Tropical West Pacifi...

Alex Mustard / Common ghost goby (Pleurosicya mossambica) hides in the branches of a sea pen (Pteroeides sp.). Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Tropical West Pacific...

David Hall / Mozambique ghostgoby (Pleurosicya mossambica) living commensally with Sea pen (Pennatulacea). Komodo, Indonesia; November, 2006

David Hall / Soft coral ghostgoby (Pleurosicya boldinghi) swimming through Soft coral (Dendronephthya). Shrimp and benthic Comb-jellies (Ctenophora) present, all commensal. Pantar, Alor Archipelago, Indonesia.

David Hall / Ghostgoby (Pleurosicya boldinghi) commensal on Soft coral (Dendronephthya sp). Pantar, Alor Archipelago, Indonesia.

Magnus Lundgren / Wild Wonders of China / Whip coral gobies, or wire-coral gobies (Bryaninops yongei) on a stinging whip coral. Xiaoliuqiu Island, Taiwan

Gary Bell/ Oceanwide / Cling Goby (Pleurosicya micheli) and coral polyps, Great Barrier Reef, Australia

Shane Gross / Common ghost goby (Pleurosicya mossambica) on soft coral, Alor, Indonesia.

Shane Gross / Common ghostgoby (Pleurosicya mossambica) on soft coral, Alor, Indonesia.

Alex Mustard / Wire coral goby (Bryaninops yongei) with what looks like a fungal infection covering its body on a wire coral (Cirripathes sp.). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Juergen Freund / Shortfin Lionfish (Dendrochirus brachypterus) and two Golden coral goby (Paragobiodon xanthosoma) using rubbish as their home, Sulawesi, Indonesia. November.

Juergen Freund / Black banded damselfish (Amblypomacentrus breviceps) and Yellow clown goby (Gobiodon okinawae) hiding in a discarded bottle, Sulawesi, Indonesia. November.

Georgette Douwma / Brown-barred goby (Amblygobius phalaena). West Papua, Indonesia. Indo-West Pacific.

Georgette Douwma / Crab-eye goby / goby (Signigobius biocellatus). West Papua, Indonesia. Indo-West Pacific.

David Fleetham / Slender spongegoby (Phyllogobius platycephalops) and two Crabs of different species on Sponge. Several parasites with egg cases on the side of the Goby. Philippines.

David Fleetham / Wire coral goby (Bryaninops yongei) with polyps extended on Wire coral (Cirrhipathes sp). Hawaii.

Alex Mustard / Common ghostgoby (Pleurosicya mossambica) perches on an orange and white seafan (Euplexaura sp.), on a coral reef. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Pair of Common ghostgobies (Pleurosicya mossambica) spawning on a pink sponge. The male is the larger fish on the right. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Claudio Contreras / Redhead goby (Elacatinus punticulatus), Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

Claudio Contreras / Redhead Goby (Elacatinus punticulatus), Espiritu Santo National Park, Sea of Cortez (Gulf of California), Mexico, February

David Fleetham / Cleaning Goby (Gobiosoma genie) on hard coral, Bonaire, the Netherlands Antilles, Caribbean.

David Fleetham / Whip corl dwarf goby (Bryaninops yongei) has eaten away the polyps of Wire coral, (Cirrhipathes anguina) on which it lives, in preparation for laying its eggs on this section. Tubbataha Reef, Philippi...

David Fleetham / Parasitic Copepod (Copepoda) on Whip coral goby (Bryaninops amplus), on whip coral, (Junceella fragilis), Indonesia.

David Fleetham / Whip coral goby (Bryaninops amplus) on Whip coral (Ellisella sp). Komodo, Indonesia.

David Fleetham / Sharknose cleaner goby (Gobiosoma evelynae) sitting on the head of a spotted moray eel, (Gymnothorax moringua), Caribbean.

Richard Robinson / Sostra pygmy goby (Trimma sostra) in coral Namuka-i-Lau Island lagoon, Lau Island Group, Fiji.

Richard Robinson / Sostra pygmy goby (Trimma sostra) on coral, Namuka-i-Lau Island lagoon, Lau Island Group, Fiji.

Linda Pitkin / Sharknose goby (Elacatinus evelynae) on star coral Bonaire, Leeward Antilles, Caribbean.

Linda Pitkin / Peppermint goby (Coryphopterus lipernes) on Great Star Coral (Montastraea cavernosa) Bonaire, Leeward Antilles, Caribbean.

Alex Mustard / Close up photo of a Glass goby (Coryphopterus hyalinus) on a coral reef. Jardines de la Reina, Gardens of the Queen National Park, Cuba. Caribbean Sea.

Alex Mustard / Pair of Michel's gobies (Pleurosicya micheli) laying eggs on an area of hard coral that they have cleared of coral tissue. The male is the larger individual, the female has a swollen belly. Bitung, No...

Alex Mustard / Yellow hairy goby (Paragobiodon xanthosoma) sheltering in coral. Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Tropical West Pacific Ocean.

Georgette Douwma / Convict blenny or False catfish (Pholidichthys leucotaenia). juveniles school in vast numbers over coral reefs. Ambon, Indonesia.

Franco Banfi / Goby (Bryaninops loki) pair on a Wire coral, My Paradise Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.

Franco Banfi / Rounded bubblegum / Bubble coral (Plerogyra sinuosa) with two Gobies (Gobiidae) on it, Lazi Pier, Dumaguete, East Negros Island, Central Visayas, Philippines, Pacific Ocean.

Bert Willaert / Wire coral goby (Bryaninops youngei) on yellow wire coral (Cirripathes anguina). Bismarck Sea, Vitu Islands, West New Britain, Papua New Guinea

Alex Mustard / A large whip goby (Bryaninops amplus) on a whip coral against blue water. Sangeang Island, Sumbawa, Indonesia. Flores Sea.

Alex Mustard / A many host goby (Pleurosicya mossambica) perches, camouflaged on a smooth sea fan (Annella mollis).Similan Islands, Thailand. Andaman Sea, Indian Ocean.

Franco Banfi / Goby (Bryaninops sp) on coral branch, Tubbataha Reef Natural Park, UNESCO World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines

Alex Mustard / Yellow hairy goby (Paragobiodon xanthosoma) guarding its eggs laid deep inside a coral colony. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Whip goby (Bryaninops sp.) with copepod parasites (with characteristic coiled egg mass) on a whip coral. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Georgette Douwma / Soft-coral ghost goby (Pleurosicya boldinghi). Lembeh Strait, North Sulawesi, Indonesia.

Alex Mustard / Yellow hairy / Emerald coral goby (Paragobiodon xanthosoma) in coral, Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Pacific Ocean.

Alex Mustard / Whip coral goby (Bryaninops amplus) on coral, Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Pacific Ocean.

Tony Wu / Wire coral goby (Bryaninops yongei) Lembeh Strait, North Sulawesi, Indonesia

Tony Wu / Blackfin coral goby (Paragobiodon lacunicolus) hiding among the branches of a small coral formation in the muck at Lembeh Strait, North Sulawesi, Indonesia

Tony Wu / Common ghost goby (Pleurosicya mossambica) diligently guarding its brood of eggs on the surface of a sponge, in the muck at Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Blue club sea squirt (Rhopalaea crassa) with a small Goby, unknown species. West Papua, Indonesia.

Georgette Douwma / Lemon coralgoby (Gobiodon citrinus) pair on coral perch. Egypt, Red Sea.

Georgette Douwma / Lemon coralgoby (Gobiodon citrinus) on coral perch. Egypt, Red Sea.

Alex Mustard / Cleaner goby (Elacatinus genie) waiting for fish on a brain coral. North Wall, Grand Cayman, Cayman Islands. Caribbean Sea.

Alex Mustard / Nassau grouper (Epinephelus striatus) cleaned by Cleaner gobies (Gobiosoma genie) and juvenile Spanish hogfish (Bodianus rufus) on a coral reef. Bloody Bay Wall, Little Cayman, Cayman Islands. Caribbe...

Alex Mustard / Many host goby (Pleurosicya mossambica) on leather coral. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Alex Mustard / Translucent goby (Bryaninops erythrops) rests on sponge (Pione vastifica) covered in spionid worms (Polydorella smurovi) Nuweiba, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Alex Mustard / Wire coral goby (Bryaninops youngei) on yellow wire coral (Cirripathes anguina) The Alternatives, Sha'ab Mahmood, Sinai, Egypt. Red Sea.

Alex Mustard / Wire coral goby (Bryaninops youngei) on Yellow wire coral (Cirripathes anguina) The Alternatives, Sha'ab Mahmood, Sinai, Egypt. Red Sea.

Alex Mustard / Translucent goby (Bryaninops erythrops) on red sponge (Pione sp.) Sinai, Egypt. Red Sea.

Solvin Zankl / Soft coral ghost goby (Pleurosicya boldinghi) camouflaged amongst Soft coral, Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Solvin Zankl / Soft coral ghost goby (Pleurosicya boldinghi) Raja Ampat, West Papua, Indonesia, Pacific Ocean.

Solvin Zankl / Pygmy goby (Eviota sp) resting on coral, Raja Ampat, West Papua, Indonesia, Pacific Ocean

Georgette Douwma / Soft coral (Dendronephthya sp) showing embedded spicules / sclerites, with a Soft coral goby (Pleurosicya boldinghi) Egypt, Red Sea.

Claudio Contreras / Neon Dwarfgoby (Eviota pellucida), Inanuran Island, Danajon Bank, Central Visayas, Philippines, April

Franco Banfi / Soft coral ghostgoby (Pleurosicya boldinghi) on soft coral, Maldives, Indian Ocean

Franco Banfi / Soft coral ghostgoby (Pleurosicya boldinghi) on soft coral, Maldives, Indian Ocean

Franco Banfi / Neon triplefin (Helcogramma striata) Maldives, Indian Ocean

Franco Banfi / Wire coral goby (Bryaninops yongei) on wire coral, Maldives, Indian Ocean

Pete Oxford / Yellownose goby (Elacatinus randalli) in Grooved brain coral (Diploria labyrinthiformis) Bonaire, Netherlands Antilles, Caribbean

Juergen Freund / Banded shrimp goby (Cryptocentrus cinctus) yellow morph with snapping shrimp partner (Alpheus sp.) Papua New Guinea.

Juergen Freund / Banded shrimp goby (Cryptocentrus cinctus) yellow morph, Papua New Guinea.

Juergen Freund / Flagtail shrimp goby (Amblyeleotris yanoi) and shrimp (Alpheus randalli), Bali, Indonesia.

Juergen Freund / Orange-dashed / Maiden goby (Valenciennea puellaris) on seabed, Kimbe Bay, West New Britain, Papua New Guinea.

Juergen Freund / Steinitz' shrimp goby (Amblyeleotris steinitzi) with parasitic nudibranch (Gymnodoris nigricolor) feeding on its dorsal fin, the goby lives in symbiosis with the shrimp who digs a burrow which the gob...

Juergen Freund / Steinitz' shrimp goby (Amblyeleotris steinitzi) with parasitic nudibranch (Gymnodoris nigricolor) feeding on its dorsal fin, the goby lives in symbiosis with a shrimp who digs a burrow which the goby...

Juergen Freund / Rainford's / Old glory goby (Amblygobius rainfordi) New Ireland, Papua New Guinea.

Juergen Freund / Pair of Twinspot gobies (Signigobius biocellatus) blending in with the sand and coral. North Raja Ampat, West Papua, Indonesia.

Hiroya Minakuchi / Whip Coral Goby (Bryaninops youngei) on coral, Borneo, Malaysia

Juergen Freund / Twinspot / Crab-eyed goby (Signigobius biocellatus). North Raja Ampat, West Papua, Indonesia

Michele Westmorland / Bridled Goby (Coryphopterus glaucofraenum) Dominica, West Indies, Caribbean.

Fred Bavendam / Goby (Pleurosicya mossambica) on ascidian, Komodo Island, Indonesia

Fred Bavendam / Whip Coral Goby (Bryaninops youngei) among eggs, Manado, Indonesia

Fred Bavendam / Yasha Hase Shrimp Goby (Stonogobiops yasha) sharing a burrow with a Randall's Shrimp (Alpheus randalli), Coral Sea, Australia

Fred Bavendam / Tunicate (Rhopalaea crassa) with Goby (Pleurosicya mossambica), Bali, Indonesia

Fred Bavendam / Large Whip Goby (Bryaninops amplus) on coral, Australia