Common Lionfish (Pterois volitans) ハナミノカサゴ are also known as Red Lionfish or Turkeyfish. They have a lot of other names too. I have seen a lot more of these than any other kind of Lionfish, so I am going with Common Lionfish. They have tentacles over their eyes and under their mouth. Long venomous stipes that they use to herd prey into a corner and suck them up. The spines have membranes like on banners.
Common Lionfish also have vertical bars with a line of white dots by the lateral line. White dot behind the pectoral fin, other Lionfish have this dot too. Spots on the sort fins.
Common Lionfish are usually red and white. They can be very dark and look black and white.
Here is a juvenile Common Lionfish. The vertical bars form a V a little behind the pectoral fins. This V is in the adults too.
A Common Lionfish heading for a school of small fish.