Hi there! I see you live in Guam so I guess you have the opportunity to go back and change some settings easily? I hope you don't mind if I am honest because it might help you.
1. I think you are very over-exposed - it looks like some of the white areas are "blown out" entirely. Can you explain the settings you used? I think this looks like a jpg that has been "auto-leveled", but that started very over exposed.
1b. Can you shoot RAW with the XZ1?
2. I think the white balance is way off because of the big range of colors in the anemone and the stripe of the fish. I think this must mean that your strobe is not firing, or is not aimed at the subject...because with a strobe this will not happen, you would have consistent white light provided by the strobe.
3. We can only see a small copy here (few pixels x few pixels), but can you tell us if this is the whole frame? It seems out of focus. This could be a too-long exposure, or a problem with the focus, or the lens or port is not clean...or maybe that what you are showing is very small part of the original (extreme crop).
You can get excellent results with your camera and strobe! I suggest you practice in a dark room, and experiment with the settings, before your next dive.
Sorry if I seem critical, that is not my intention, we all need help!