Synanceiidae
Synanceiidae, commonly known as the Stonefish family, is a family of venomous fishes found in the tropical waters of the Indian and Pacific Oceans, including the Red Sea. This family includes some of the most venomous fishes in the world, with their venom causing severe pain, tissue damage, and sometimes even death.
Lionfish
Lionfish are a group of venomous fish that are native to the Indian and Pacific Oceans, but have become an invasive species in the Red Sea.
Octopus
Octopuses belong to the family Octopodidae, which is the most species-rich family within the order Octopoda. There are more than 300 species of octopuses found worldwide, and several of these can be found in the Red Sea.
Dolphin
Dolphins found in Red Sea are Odontoceti (toothed whales) and although they are not seen around reefs, they do inhabit large sheltered lagoons, of which three are well documented.