It is very similar to other members of its genus.

It is the only member of its genus and family.

This fish is the only known member of its genus.

Teeth are as in the other members of the genus.

It is currently the only known member of its genus.

The only member of its genus to live in Australia.

It is among the earliest known members of its genus.

It is the only member of its genus to reach Australia.

Like other members of its genus, it is popular as an aquarium fish.

Like other members of its genus, it has a bare neck and head.