This is a weird shot of a fish in a bowl. Based on just looking at it, I don't see how it meets the criteria of the challenge. It's a kind of pretty abstraction but not compelling enough to really work for me.
I don't know about serendipity, but it could be overexposed. The composition is interesting, and the colors would be nice, if not for the blown out whites. Whenever I see whites that bright, my initial reaction is to squint, as if I'm looking into the sun. I think that hurts this shot a lot.
Pretty! The composition is a little empty, though. Try cropping closer, so there is not so much white. Or, alternatively, brighten the whole thing so that the fish is even more alone.
I don't know what this is, so I find it hard to vote. I like the colors but the are distracting scratches or streaks. I think I'd like more crispness to it and perhaps more context for what the subject is.