The attractive bands of different shades of green on the Fiji Banded Iguana give it good camouflage in its arboreal habitat in forests of central and northwestern islands of Fiji. The Brachylophus genus of iguanas is one of the few found outside of the Americas. The Fiji Banded is recognized as distinct from the Lau Banded Iguana (Brachylophus fasciatus) below.

It is vegetarian (eating leaves, flowers and fruit) and spends most of its time in the trees. It climbs and swims well.

The bands are not always prevalent, especially on females. They say that its ancestors probably drifted across the Pacific from the Americas on a treetrunk or raft of vegetation.

The similar-looking Lau Banded Iguana above, from the eastern islands of Fiji, is recognized as genetically distinct from the central and western islands' Fiji Banded Iguana (further above).

It is threatened particularly by introduced rats and feral cats; also by deforestation.