Not sure what I can say about this fish...a lumpsucker (Lethotremus awae) or dango-uo (ダンゴウオ) in Japanese...except that it's extraordinarily cute and exceedingly small. This one is just under one centimetre long.
There was a major swell, the fish was unusually active and in an awkward place, and it was dark...so this isn't the best photo, but it's the first one I've ever seen (I've wanted to see one for a long time), so I'm happy.
😊
