Mertensii Butterflyfish



The Mertensii Butterflyfish, also known as the Orangetail Butterflyfish, or Crowned Pearlyscale Butterflyfish is a blue-silver hue with black lines on the body's scales. It has a crisscross pattern and a pearly sheen. The majority of its posterior is orange. It is also black with silver edges in the eye. It could be housed in a 120 gallon or bigger aquarium if it is maintained and calm. It can be kept in conjunction together with other Butterflyfish when they are introduced into the tank at the same time. It is not considered to be reef safe. A diet for the butterflyfish Mertensii must include a variety of meaty meals.   Approximate Purchase Size: Small: 1-1/2" to 2-1/4"; Medium: 2-1/4" to 3-1/2"; Large: 3-1/2" to 4-1/2"
  • Description
  • Additional Information
  • Reviews
General information about Mertensii Butterflyfish The Mertensii butterflyfish (chaetodon mertensii) is blue silver with black lines on the scales of its body. It has a criss-cross design and a pearlescent sheen. The majority of its posterior is orange, and it also has a black-edged silver stripe running through its eye. It can be kept in larger home aquariums, provided it is kept clean and tranquil. It could be kept alongside other Butterflyfish when they are brought into the tank at the same time.
Large, Medium, Small
6 lbs


There are no reviews yet.

Be the first to review “Mertensii Butterflyfish”

Your email address will not be published. Required fields are marked *

Helpful Questions From Clients
Frequently Asked Questions
Is hiring a professional necessary to set up a saltwater aquarium?

As a general rule, a larger custom aquarium might require installation by a professional. However, a kit from our online fish store is relatively affordable and beginner friendly. That means you should have no problem setting it up yourself.

Which saltwater aquarium fish should you choose when starting out?

Consider a yellow tang fish. This popular saltwater aquarium fish does a great job of coexisting with other types of fish you’ll find in our online fish store.

How does a saltwater aquarium differ from a freshwater one?

Saltwater aquariums require a bit more maintenance and monitoring than freshwater tanks. Different fish require different levels of salinity, pH tolerances, and temperature requirements. They also require specialized pumps, filters, and other equipment that can handle salt. We can guide you through everything you need to know to set up a healthy, thriving reef tank.

Do fish in a saltwater aquarium swim in a school?

That depends on the species. However, if it’s a fish that swims in a school in the wild, they’ll do the same in an aquarium. Some fish that swim in schools include the green and blue chromis, cardinalfish, and dartfish, for example. When ordering from an online fish store, make sure you do your research on how specific fish species behave to ensure they’ll school (or at least coexist) with your current fish.

Is the effort required to maintain a saltwater aquarium worth it?

Yes! Many aquarists dream of owning thriving saltwater aquariums. You have a tiny piece of the ocean in your home, featuring magical and exotic fish that can only survive in saltwater.