Aspect: Pearlised white body that mostly reflects surrounding colours, with delicate wavy scale patern, and yellow head. Dorsal fin runs from head to tail. Population: Very common. Notable feature: Prominent forward-set globular eyes. Environment: Typically hovers semi-vertically over its burrow in sandy botton at depths of 20 to 40 metres. Behaviour: Remains quiet in a hovering position, but abruptly sinks backwards into its hole if approached too closely.