RIBBONFISH LARGEHEAD HAIRTAIL P513

They are generally steel blue in coloration with silvery reflection, pectoral fins are semi-transparent. Other fins are sometimes tinged with pale yellow.

Their color become uniform silvery grey sometime after death. Their mouth is very large with dermal process at the tip of each jaw.

The dorsal fin is relatively high, and anal fin reduced to minute spinules usually embedded in the skin or slightly breaking through.