Image: Port Jackson Shark gill slits.

Port Jackson Shark gill slits.

A Port Jackson Shark specimen from the Australian Museum Fish Collection (AMS IB.3427). Note the first enlarged gill slit with four posterior gill slits.

Photographer:
Paul Ovenden
Rights:
© Australian Museum

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Tags fish, ichthyology, Port Jackson Shark, Heterodontus portusjacksoni, gills,