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Scientific Name: Chaetodon mertensii
Origin: Indo-Pacific, Fiji
- Care Level: Moderate
- Temperament: Peaceful
- Lifespan: 5-7 years, possibly longer
- Reef Compatible: With Caution
- Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
- Maximum Size: 5"- 6"
- Diet: Omnivore
- Minimum Tank Size: 100 gallons
The Mertensii Butterflyfish, also simply known as the Mertens Butterflyfish, is a light silver color with a pearlescent sheen and black chevron markings along its body. The chevron stripes have a slightly blurred, criss-cross appearance. The posterior and tail is a striking almost yellow orange. It has a black stripe through its eye.
It will appreciate ample swimming space and hiding places. A peaceful species, it can be housed with other butterflies provided that they are introduced at the same time, and can cohabitate with a variety of other tankmates. It may nip at invertebrates within a reef setting. It's diet should be mostly meaty with some herbivorous preparations as well.