Mertensii Butterfly (Chaetodon mertensii)
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The Mertensii Butterfly is fairly hardy and will adapt well to life in an aquarium if acclimated properly. These can be kept in groups of fish, including other butterflies. They won't do well with fish that are overly aggressive, but they will also nip and pick at fish that are very timid. Like most butterflies, we don't recommend placing the Mertensii in reef aquariums because they are very likely to consume a variety of coral polyps and clam mantels. This butterfly will grow to be about 6" in size and will need ample swimming space. The Mertensii Butterfly is mostly a pearly white with black chevron markings and an orange posterior. Their dorsal fins are jagged and can get caught in nets. They are found in the Indo-Pacific inhabiting lagoons and seaward reefs near drop offs and ledges. Juveniles can be found in groups while adults are mostly seen singly or in pairs.
- - Add to an aquarium with ample rockwork and swimming room
- - For continued health, provide a varied diet of meaty foods and vegetable-based foods
- - Not reef safe
- - Intermediate hobbyist
- - Multiple can be added to an aquarium as long as it is large enough and added simultaneously
- - Minimum tank size: 100 gallons (depending on how many in aquarium)
- - Approximate selling size: 2.25-3.5"
Petco Marine Fish
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Petco takes great care to ensure that the Live Fish & Invertebrates you order arrives safely and in healthy condition. All Aquatic Life are guaranteed to stay alive for 30 days from the day they arrive at your home or we will gladly refund your money. Returns or refunds cannot be offered on Live Fish & Invertebrates that you decide you do not want. Please ensure the items you order are what you want before finalizing the order. If you experience a loss of your marine fish, freshwater fish, or invertebrates within 30 days of delivery please contact Customer Relations at 877-738-6742.
ACCLIMATION: Avoid exposing new aquatic life to bright lights after opening the box. Turn off aquarium lights prior to floating aquatic life. Allow the sealed bag with your new fish to float in your aquarium for at least 15 minutes (but no longer than one hour) to ensure the water in the bag matches the temperature in your aquarium. A bacteria booster addition can assist with the addition of new aquatic life. Petco offers free water testing in store to determine if your water is safe for the addition of new aquatic life. DIET: A well-balanced diet consists of a variety of flakes, pellets, freeze-dried and frozen foods, depending on the species. FEEDING: Feed sparingly and no more than fish can eat in 1-2 minutes. Overfeeding can quickly foul the water, especially in smaller aquariums.
If we need to contact you for any reason about your order, shipping of your package may be affected. Once your order is placed, you will receive a confirmation email with your order summary. Orders are subject to verification of payment information by phone or email. We ship for arrival to the customer Tuesday through Friday and Saturday for an extra charge where available.
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