Welcome to pixeljoint!
Unfortunately, it appears as if there were gradient tools used in this that no longer make this pixel art. Gradients, automatic AA, and similar tools up the color count to a total of 4359. For further verifications as to what you can and can't do in this medium, go here- http://www.pixeljoint.com/forum/forum_posts.asp?TID=11299
So, because of these reasons, it doesn't look like it will get into the gallery.
It's a nice peice, but it's a tad messy. The tentacles are nice. I would advice trying the weekly challenges or bringing your work to the wip section of the forum if you are looking to get better or are after some critique.
Well... Hmm... Okay I guess. thanks.