Clearfin Lionfish [Pterois radiata]

The Clearfin Lionfish, Tailbar Lionfish, Radiata Lionfish or Radial Firefish, Pterois radiata, is a carnivorous ray-finned fish with venomous spines that lives in the Indian and western Pacific oceans.
It is the only lionfish species with blank spines. But it can also be recognized by the pair of horizontal white stripes on its tail. (text source: Wikipedia)

Picture: The blue hole, Dahab, Egypt by Sami Salmenkivi

Common Lionfish or Devil firefish [Pterois Miles]


Length up to 35cm. This Common Lionfish varies in colour from reddish to tan or grey, and has a feathery dorsal fin and wing-like pectoral fin. Habitat in areas with crevices or lagoons, often on the outer slope of coral reefs. Distribution: Indian Ocean, Red Sea, South Africa, Indonesia, Also known in eastern Mediterranean. Very similar in appearance to Red Scorpionfish [pterois volitans] which does not occur in the red sea. The common lionfish generally has 10 dorsal-fin rays, pterois volitans has 11. Fin spines are highly venomous and can be dangerous to humans. (Description: wikipedia)

 Pictures, top: Australia, bottom: Egypt, Red Sea by Sami Salmenkivi