Declivis Butterflyfish

Last time this was in stock, it was £225.00


Declivis Butterflyfish, Chaetodon declivis

  • Common Name: Declivis Butterflyfish
  • Latin Name: Chaetodon declivis
  • Distribution: The Declivis Butterflyfish is native to the Western Central Pacific Ocean, including areas such as the Great Barrier Reef, New Caledonia, and Vanuatu.
  • Max Size: They typically grow to about 8 inches (20 cm) in length.
  • Temperature Range: They thrive in water temperatures ranging from 75°F to 82°F (24°C to 28°C).
  • pH Range: The optimal pH range for Declivis Butterflyfish is 8.1 to 8.4.
  • KH Range: They prefer a carbonate hardness (KH) between 8 and 12 dKH.
  • Care Level: Declivis Butterflyfish are considered to be on the delicate side in terms of care requirements and are more suitable for experienced aquarists.
  • Lighting Preference: They don’t have specific lighting preferences, but providing moderate to high-intensity lighting is generally suitable.
  • Preferred Food: They primarily feed on coral polyps and small invertebrates. In a home aquarium, a varied diet of live or frozen foods, such as brine shrimp, mysis shrimp, and high-quality prepared marine fish foods, is essential.
  • Behaviour: These fish are generally peaceful but can be territorial when it comes to their feeding territories. They are best kept as single individuals or mated pairs in larger tanks.
  • Suitable for Reef Tanks: While they can be kept in reef tanks, caution is advised because they may nip at or eat certain corals. Compatibility with other reef inhabitants should be considered.
  • Interesting Facts: Declivis Butterflyfish are known for their striking appearance, with vibrant colours and distinct markings. They have a unique behaviour of hovering over corals and sponges to feed on polyps,

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Free shipping on orders over £50 (may exclude some aquariums)  Geographical restrictions may apply

LIVESTOCK = Fish, Critters and Corals

Minimum order value £30Delivery charge £19.99. Delivery days Are Varied At The Moment.  We will contact you to confirm your delivery day. Some geographical restrictions apply See shipping

Aquarium Plants: Are shipped the same as and can be mixed with Dry goods *Free shipping on orders over £50 or £6.99 for orders under £50. Some geographical restrictions may apply.

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Declivis Butterflyfish, scientifically known as Chaetodon declivis, is a beautiful marine species with a maximum size of around 8 inches (20 cm). They exhibit a striking combination of colours, with bright yellow and white bands adorning their sleek bodies.

Taxonomy and Identifying Features:

Belonging to the family Chaetodontidae, the Declivis Butterflyfish is part of the Chaetodon genus. These fish are recognized for their distinct disk-like bodies and triangular dorsal and anal fins. Their closest relatives include other butterflyfish species. The name Chaetodon is derived from the Greek words “chaite,” meaning hair, and “odon,” meaning tooth, referring to the fine teeth in their mouths.

Natural Habitat:

In their natural habitat, Declivis Butterflyfish inhabit coral-rich environments, typically found in the Indo-Pacific region. These habitats feature vibrant coral reefs teeming with marine life, offering a breath taking underwater panorama.

Keeping Declivis Butterflyfish Healthy:

Maintaining Declivis Butterflyfish in aquariums can be moderately challenging due to their specific dietary needs and territorial behaviour. The care level is considered moderate. They thrive in water temperatures between 75-82°F (24-28°C), a pH range of 8.1-8.4, and a carbonate hardness (KH) of 8-12 dKH.

Special Requirements and Feeding: 

Declivis Butterflyfish have a specialized diet that includes coral polyps and small invertebrates in the wild. In captivity, replicate this diet by offering a mix of high-quality flake, frozen, and live foods, such as brine shrimp, mysis shrimp, and marine algae.

How Many Should I Keep:

It is advisable to keep Declivis Butterflyfish individually or as mated pairs in an aquarium. These fish can exhibit territorial behaviour, especially if multiple conspecifics are kept together.

Lighting Preference:

Declivis Butterflyfish thrive in well-lit aquariums, mimicking the bright conditions of their natural reef habitats.

Suitable Tank Mates:

When selecting tank mates for Declivis Butterflyfish, consider other peaceful, reef-safe species that are compatible with their dietary and environmental needs. Compatible companions include other butterflyfish, angelfish, and docile reef inhabitants. Avoid aggressive or territorial fish that may harass or compete with them for food and space.

Reproduction in the Wild:

Declivis Butterflyfish (Chaetodon declivis) reproduce through external fertilization. Courtship displays are part of their natural breeding process.

Breeding Chaetodon declivis:

1) Set Up

Breeding Declivis Butterflyfish in captivity necessitates a well-maintained aquarium. Maintain a temperature of 78-82°F (25-28°C) and a pH of 8.1-8.4. Ensure the presence of live rock and corals for eggs to attach.

2) Courtship/Spawning

Mated pairs should be introduced to a spacious tank with hiding spots. Courtship behaviours involve males chasing females. Spawning typically occurs in the morning, with eggs released and attaching to coral surfaces.

3) Rearing

Larvae require specialized care after hatching. A suitable diet of zooplankton, phytoplankton, and rotifers is necessary for their nutrition. As they grow, transition to larger live and prepared foods.

Sexual Dimorphism:

There is minimal to no sexual dimorphism in Declivis Butterflyfish. Both males and females generally exhibit similar colouration and features.


Chaetodon declivis, the Declivis Butterflyfish, is native to the Indo-Pacific region. Their distribution extends across regions including the Red Sea, the eastern coast of Africa, and throughout the western Pacific Ocean.


Declivis Butterflyfish, Chaetodon declivis, are captivating marine species known for their striking appearance and distinctive colouration. Caring for them in an aquarium setting can be moderately challenging due to their specific dietary needs and territorial tendencies. In their natural habitat, they reproduce through external fertilization following courtship displays. While they exhibit minimal sexual dimorphism, their vibrant presence and compatibility with reef tanks make them a valued addition to marine aquariums. They are typically found in the coral-rich environments of the Indo-Pacific, creating a mesmerizing underwater landscape. Breeding Declivis Butterflyfish in captivity involves careful setup, orchestration of courtship behaviours, and diligent rearing of their delicate larvae. These elegant fish hail from a broad range of the Indian and Pacific Oceans. Declivis Butterflyfish are prized for their unique beauty, making them a sought-after choice for experienced aquarists.


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Dry Goods Delivery.

The store has provided information regarding their order dispatch and estimated delivery times. Here are the key details:

  1. Dispatch Timeframe: Orders placed before 2pm will be dispatched on the same day. Orders placed after 2pm will be dispatched on the next working day.
  2. Delivery Date and Time Guarantee: While the store aims to dispatch orders promptly, they cannot guarantee a specific delivery date and time. As the delivery process relies on couriers, there may be factors beyond their control that could affect the delivery timeframe.
  3. 1st Class Mail: For orders sent via 1st Class mail, the aim is to have them delivered on the next working day after dispatch.
  4. 2nd Class Mail: Orders sent via 2nd Class mail typically take approximately 2-3 working days for delivery after dispatch.
  5. APC Next Day Delivery: APC Next Day delivery is available for UK mainland postcodes. It is usually delivered on the next working day after dispatch. However, please note that items being delivered to more remote areas may require additional time for delivery.

It’s important to keep in mind that while the store strives to provide efficient delivery services, unforeseen circumstances or external factors could potentially impact delivery times. For further details or specific inquiries about delivery, customers should refer to the store’s terms and conditions or contact the store directly.

Livestock Delivery.

The store maintains specific policies regarding the delivery of livestock. Here are the key points:

  1. Licensed Livestock Courier: The store exclusively uses a licensed livestock courier for shipping fish and coral. This approach is chosen to ensure responsible and ethical transportation of the livestock.
  2. Livestock Shipping Fee: The livestock shipping fee charged to customers of £19.99 does not cover the true cost, and therefore, there is a minimum spend requirement of £30.00 before the option for livestock shipping becomes available.
  3. Pre-Arranged Delivery: The store never ships livestock without first arranging a suitable delivery day. Before dispatching the livestock, the store must confirm the agreed-upon delivery day with the customer.
  4. Saturday Delivery Confirmation: Customers who choose Saturday delivery must have their availability confirmed for the upcoming Saturday before the store sends out the livestock. This confirmation ensures that the livestock can be received promptly.
  5. Failure to wait for livestock: Not waiting for livestock, even if there is a reasonable delay, or cancelling an order after it has been dispatched will lead to you incurring charges for an emergency return to the base. Additionally, any losses of livestock will also be charged to you. Please be aware that the items you are ordering are living creatures – livestock. We kindly ask that you refrain from ordering livestock if you are unable to accommodate the possibility of a delayed delivery.

    These terms and conditions are a fundamental aspect of our policy. Our primary goal is to dissuade individuals who could react negatively to a delayed delivery and subsequently request order cancellations. It is of utmost importance to underscore that your order pertains to living creatures, not mere inanimate objects. In the event of an occasional delay, it is crucial that you respond in a rational and responsible manner, taking into account the welfare of the livestock. We kindly request that you refrain from placing an order for livestock if you tend to react strongly to such situations. By proceeding with the order of livestock, you indicate your acceptance and agreement to abide by these specified terms and conditions.

  6. Signature Requirement: Livestock deliveries require a signature upon receipt and cannot be left in a safe location. This precaution ensures proper handling and the well-being of the livestock.
  7. Geographic Restrictions: The courier has strict geographic restrictions for livestock deliveries. Unfortunately, deliveries to Northern Ireland, Republic of Ireland, Isle of Man, Isles of Scilly, Channel Islands, and certain Scottish offshore postcodes may not be possible. Customers are encouraged to contact the store via email to confirm if livestock delivery is available in their area.
  8. Minimum Order Value and Order Cancellations: The store has a minimum order value of £30 for livestock shipping. Additionally, the store reserves the right to cancel orders that are deemed high-risk or involve a high number of single tropical freshwater fish species.

It is essential for customers to familiarize themselves with these policies before making a purchase. For more detailed information or specific inquiries, customers should consult the store’s terms and conditions or reach out to the store directly for clarification.

Livestock Geographical Exemptions.

The store has specific geographical exemptions for livestock deliveries. Here is a list of the areas and postcodes where livestock delivery is not available:

  1. Islands: Livestock cannot be delivered to the Shetlands, Channel Islands, and Isle of Man.
  2. Postcodes: Livestock delivery is not available to the following postcodes:
  • AB30 to AB39, AB41 to AB45, AB51 to AB56
  • DD8 to DD10
  • BT all
  • DG3 to DG9, DG12 to DG14
  • KA18 to KA19, KA26, KA29 to KA30
  • HS all
  • IM all
  • JE all
  • ZE all
  • KW15 to KW17
  • TD9
  • FK17 to FK21
  • GY all
  • KA26, to KA28
  • PA20 to PA38, PA41 to PA49, PA60 to PA61, PA76 to PA78
  • TR21, to TR25
  • PH3 to PH26, PH30 to PH44
  • IV all

Customers residing in these areas should be aware that livestock delivery is not available to their location.

We can ship livestock to the Isle of Wight, this area is subject to a surcharge.

For further information or specific inquiries about livestock delivery to a particular area, customers are advised to contact the store directly for clarification.


According to the store’s policy, customers have the right to cancel an order within 14 working days of receiving the goods. To initiate the cancellation, the goods must be returned to the store in new and unused condition, adhering to their Returns Policy.

Important points regarding the return process are as follows:

  1. Return Condition: The goods must be returned in new and unused condition, as originally received. It is important to ensure that the goods are in the same condition as when they were sent out.
  2. Return Timeframe: The goods must be received by the store within 21 days of notifying them about the cancellation. During this time, customers are responsible for any loss or damage that may occur during the return shipping process.
  3. Refund Process: Once the store receives the goods in new and unused condition, they will initiate the refund process. The purchase price will be refunded to the customer.
  4. Return Condition Inspection: If the returned goods arrive in a condition that is less than what they were sent out in, the store reserves the right to return the goods to the customer, and no refund will be processed.

It is essential for customers to carefully review the store’s Returns Policy and follow the specified procedures to ensure a smooth and successful return and refund process. For more detailed information or specific inquiries, customers should consult the store’s terms and conditions or contact the store directly.


According to the store’s return policy, the following guidelines should be followed for returning goods:

  1. Use Returns Form: Customers need to use the store’s provided returns form to initiate the return process. This form helps the store acknowledge that the goods are being sent back.
  2. Return for Testing: If the goods are being returned for testing, the customer is responsible for covering the return shipping expenses.
  3. Refund of Postage Fees: The store will only refund postage fees if the order arrives damaged or becomes faulty within the first 4 weeks of purchase. Proof of posting is important, and customers should ensure the goods are well-packed and obtain proof of posting as the goods remain their responsibility until received by the store.
  4. Refund of Postage Costs for Replacement: If goods are being returned within 7 days of purchase under the Replacement Policy, the store can refund postage costs. However, the customer needs to agree on a delivery service with the store in advance, and only standard or tracked shipping fees will be refunded. The store cannot refund the cost of any special delivery service.
  5. Non-Refundable Postage: Postage costs for goods returned for any other reason than those mentioned above are non-refundable. The store reserves the right to deduct the original postage cost from any applicable refund.
  6. Mistaken Purchases: If a customer has made a mistake in their purchase, they need to return the goods to the store. The customer is responsible for the return shipping costs in such cases.

It is important for customers to carefully follow the store’s return procedures and terms and conditions. For further details or specific inquiries, customers should refer to the store’s website or contact the store directly.


If customers receive faulty goods, the following guidelines apply according to the store’s policy:

  1. Notification of Faulty Goods: Customers must notify the store within 7 working days if they receive faulty goods. This notification should be made as soon as possible.
  2. Replacement Parts: If possible, the store will dispatch replacement parts for the faulty goods.
  3. Return of Goods: If replacement parts are not possible, the store may request customers to return the faulty goods in accordance with their Returns Policy. The specific return procedures and conditions should be followed.
  4. Verification of Damage: Once the store receives the returned goods, they will verify the damage. If the damage is confirmed, the store will supply the required replacements.
  5. Return Postage Costs: If the goods returned to the store are found to be in good working order, the store is not able to refund the return postage costs. Additionally, the store reserves the right to deduct their original postage cost from any applicable refund.
  6. Consequential Loss or Damage: The store cannot take responsibility for any consequential loss or damage that arises directly or indirectly from the goods supplied.

Customers should carefully review and adhere to the store’s Returns Policy and procedures for returning faulty goods. For further clarification or specific inquiries, customers should consult the store’s terms and conditions or contact the store directly.

Manufacturer’s Guarantees

The store works in collaboration with manufacturers to ensure that their guarantees are honored, and they make their best efforts to resolve issues within the warranty period. The following guidelines apply to refunds and replacements:

  1. Postage Costs under Manufacturer’s Guarantee: Postage costs can only be refunded if the goods are returned to the store within 7 days of the original purchase, as per the manufacturer’s guarantee.
  2. Refund of Postage Costs for Faulty Goods: The store will refund postage costs for guarantee/warranty returns only if the product becomes faulty within the first 4 weeks of receipt.
  3. Replacements with Manufacturer Authorization: Replacements, whether parts or goods, can only be offered when authorized by the manufacturer. Customers should contact the store for further guidance in such cases.
  4. Prior Approval for Returns: Goods should not be returned to the store without prior approval. Customers need to contact the store and obtain approval before returning any items.
  5. Replacement of Glass or Ceramic Items: Glass or ceramic items can only be replaced if the store is notified within 48 hours of receiving the delivery.
  6. Replacement of Glass Bulbs/Tubes: Glass bulbs or tubes can only be replaced if they become faulty within 14 days.

Customers should note and adhere to these guidelines to ensure a smooth and efficient resolution of any issues with their purchased items. For specific inquiries or further information, customers are advised to refer to the store’s terms and conditions or contact the store directly.


According to the store’s policy, customers have the following responsibilities regarding breakages:

  1. Checking Goods on Arrival: It is the customer’s responsibility to thoroughly check the goods upon arrival for any damage. This should be done before signing for the parcel. If the parcel appears damaged, it is advised not to sign for it.
  2. Reporting Breakages: Any breakages or damages must be reported to the store within 48 hours of receiving the goods. It is important to promptly notify the store to initiate the resolution process.

By carefully inspecting the goods upon arrival and reporting any breakages within the specified timeframe, customers can ensure that appropriate actions are taken to address the issue. For specific instructions on reporting breakages or further information, customers should refer to the store’s terms and conditions or contact the store directly.