Georgette Douwma / Keyhole angelfish (Centropyge tibicen) North Sulawesi, Indonesia.

Alex Mustard / Keyhole angelfish (Centropyge tibicen) spawning at dusk. The male is below the female, the female is release a ball of eggs in this photo. Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea...

Tony Wu / Male Keyhole angelfish (Centropyge tibicen) nudging female, encouraging her to swim up into water column to spawn. East China Sea, Kagoshima Prefecture, Japan.