Hypoptychidae

Tubenose

Aulichthys japonicus

Eggs hidden inside ascidian gill cavities

• Temperate
• Northern Hemisphere
• Regional distribution
• Marine fish
• Pacific Ocean
• East Asia
• Small
• Temperate fish

Aulichthys is a monospecific genus of marine ray-finned fish belonging to the family Hypoptychidae. Its only species is Aulichthys japonicus, the tubenose, which is found in the shallow waters on the coasts of Japan, China and the Korean Peninsula. This species lays its eggs inside of the peribranchial cavities of ascidians.