Rubble Dwarfgoby (Trimma naudei) チゴベニハゼ
This picture is not upside down the goby is. A Rubble Dwarfgoby is small it is said to not exceed 3.5 cm. I took a picture of one of these by mistake once. I hate it when I notice something in the background of a picture when editing. This one I saw on the top of a small cave. I only got one shot of it before it took off, but it is much better than the blurry blob I had before. Amami