Alex Mustard / Pair of pygmy lemon gobies (Lubricogobius exiguus) make their home in an old heart urchin (Maretia sp.) test. Dauin, Dauin Marine Protected Area, Dumaguete, Negros, Philippines. Bohol Sea, tropical we...

Alex Mustard / Pygmy lemon gobies ( Lubricogobius exiguus) guarding their home in a glass bottle (backlit with a torch). Anilao, Batangas marine protected area, Luzon, Philippines. Verde Island Passages, Tropical We...

Alex Mustard / Veined octopus (Amphioctopus marginatus) sheltering in an old bivalve shell with an attendant Yellow pygmy goby (Lubricogobius exiguus). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.

Tony Wu / Yellow pygmy goby (Lubricogobius exiguus) portrait, Kashiwajima, Japan.

Alex Mustard / Yellow pygmy goby (Lubricogobius exiguus) guarding eggs (on top of tube) as it peeks out from its home in an old worm tube. Anilao, Batangas, Luzon, Philippines. Verde Island Passages, Tropical West P...

Aflo / Yellow Pygmy-goby (Lubricogobius exiguus) pair coming out of sea shell, with one open mouthed, Shizuoka, Japan. October.

Alex Mustard / Pygmy lemon gobies (Lubricogobius exiguus) pair, guarding their home in a glass bottle, Batangas marine protected area, Luzon, Philippines, Verde Island Passages, Pacific Ocean.

Alex Mustard / Yellow pygmy gobies (Lubricogobius exiguus) pair peering our from their home inside a discarded toothpaste tube on the seabed, Bitung, North Sulawesi, Lembeh Strait, Molucca Sea.

Georgette Douwma / Yellow pygmy goby (Lubricogobius exiguus) in a discarded bottle. Lembeh Strait, North Sulawesi, Indonesia.