A Black Reef Leatherjacket, Eubalichthys bucephalus, at Jervis Bay.
Flicking the dorsal fin spine back and forwards is usually a sign of aggression. Most likely the two fish in the movie are both males. Thank you to Dr Barry Hutchins for his comments on this behaviour.
Last Updated: 3 December 2014
Black Reef Leatherjacket,
Black Reef Leatherjacket at Jervis Bay View full size
Sascha Schulz © Sascha Schulz
Black Reef Leatherjackets at Shark Point View full size
Ákos Lumnitzer © Ákos Lumnitzer
WiFi is available throughout the Museum
All our phone, email and other contact details.
Become a Member for free admission, Explore magazine subscription and more.
Subscribe to our newsletters for the latest events, offers and information.