Merten’s Butterflyfish

Chaetodon Mertensii
Mertens Butterflyfish - Marinewise © 2023 MarineWise

Quick Facts

Scientific name Chaetodon Mertensii
Other names Atoll Butterflyfish, Keel Finned Butterflyfish, Merten's Coralfish, Orangebar Butterflyfish
Size Up to 12.5 cm (4.9 in)
Weight Between 20 - 80 g (.04 - 0.17 lb)


Habitat & AU Distribution Coastal waters, coral reefs, seaward reefs, deep lagoons, drop offs and ledges
Depth Range
Mertens' Butterflyfish Distribution
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