I gave this a 6. Liked the concept and thought the use of backlighting was good. The 'criticism' I had was; a variation in cropping/angle (dependent of course) to get it more symmetrical/balanced (ie; top left corner out and a fraction more space, maybe, on the right), the few 'blown' areas and just a sharper perspective/angle to 'use the backlighting' a bit more effectively (gain more transluscence in the fins/mouths etc), would likely have made this even better in my opinion. After reading your comments that this was in a market, likely difficult to gain a sharper perspective/perfect 'backlighting' and yes, the 'close up' shows a bit more detail re the backlighting, but this entry was more 'interesting', in my opinion.
Love the sharp focus, the great lighting, and the interesting composition. These guys are quite creepy and interesting at the same time. My only complaint is the blown highlights.
I'm giving you a high score to balance out the low votes you're gonna get because this is a bit grotesque. ;) I love grotesque, and it's a wonderfully shot image. The compostion is a little off... it doesn't seem balanced to me, but it's beautiful nonetheless.