Well you make it difficult without showing the true coloration but I would guess it might be a spotfin lionfish aka Pterois antennata, look them up with the computer and see if that matches what your eyes see.
Thomas
Thanks for replying.
Sorry again for the quality of the pictures.
Anyway, I did some research on the internet and I think that it is a zebra lionfish. But I am still looking for some info on this species, the size and colour.
Thanks.