Yeah, and just to reiterate what I say in the post: CFF is a visual measure, so comparing animals that inhabit environments of characteristically different luminances is not advised. Most (though possibly not all) of the CFF variation between the crustaceans in the spreadsheet and the insects in the spreadsheet can be explained by differences in the extent to which the different animals rely on vision to interact with the world.
Yeah, and just to reiterate what I say in the post: CFF is a visual measure, so comparing animals that inhabit environments of characteristically different luminances is not advised. Most (though possibly not all) of the CFF variation between the crustaceans in the spreadsheet and the insects in the spreadsheet can be explained by differences in the extent to which the different animals rely on vision to interact with the world.