The white can look translucent and is his main color. Its similar to a Bandensis white. However, he is in a container void of substrate and I have noticed with Bandensis at least that No-Substrate often equates to a constant white resting state while a miracle mud substrate tends to cause them to be brown/red. I have seen him range from white to a slight brown and as you can see in some of the pictures, it sometimes shows a dotted pattern on its arms.
I recall the article about eggs and foods. I kept that in mind with this egg and my recent batch of bandensis eggs. With the bandensis, I didnt notice any difference, but mysids have always been the easiest food for new borns. When I became concerned that the mystery cuttle was having trouble hatching, I continued to add live shrimps in his container for a week until I was able to notice him react to one. With bandensis, there is a period of a few days to a week where it will still not be interested in food. Im guessing that this is due to there being a small amount of yolk left and/or that it will not get hungry enough to care about looking for food. Once the mystery cuttle started following shrimps around within its egg, it was confirming that he should hatch. After a week, I broke him out. Not sure if that was premature, but he seems fine!
The two outer arms have much larger webbing then bandensis and does resemble some images of Latimanus. He is about the size a larger 1 month old bandensis.