White-jawed Cardinalfish (Pseudamia amblyuroptera) encountered at 15m to 25m depth during a blackwater dive just off the reef at Short Dropoff in Palau. This fish was about 10cm in length, suggesting that it is an adult or near adult. The fish was hanging vertically in the water. It showed no concern with divers being present, making no effort to swim away. It also never adopted a horizontal position.