Huh. Well one thing's for sure, I found the ending funny. :3
Review time again! So yeah, I like the surrealism in this one. Since I'm a big fan of surrealism, you got me there. Again, the animation is there, however I believe there could be more frames added for smoothness in the the animation altogether.
As for the music, it's quite a good choice. It seems fitting to the fish's dilemma & the moment of tranquility when he finds what he's looking for. The anatomy of the characters is also pretty spot on, with the exception of the unusually bowl shaped uterus. It's supposed to be more slender on the sides, but I'm sure you drew it that way because it would've been more difficult for the fish to move around in a more enclosed or compacted space.
And a bonus, for the color of the witch-like woman's breasts. I find it better to just color them without the outlines. Like if you need to color the space for the nipples that's fine, but afterwards erase the out line when you're done. But then again, that's just my preference of how I draw them. You don't have to listen to that one.
Aside from that, well done. 3.5 out of 5. :)