Blackbelly Trigger

Last time this was in stock, it was £25.00

Blackbelly Trigger/ Bursa Trigger, Rhinecanthus verrucosus

  • Common Name: Bursa Trigger
  • Latin Name: Rhinecanthus verrucosus
  • Distribution: Bursa Triggers are naturally occurring in the tropical and subtropical waters of the Indo-Pacific region. They can be found in areas such as the Red Sea, the Maldives, the Philippines, Indonesia, and Australia.
  • Max Size: Bursa Triggers can reach a maximum size of around 30 centimetres (12 inches) in length.
  • Temperature Range: Bursa Triggers prefer water temperatures ranging from 24°C to 28°C (75°F to 82°F).
  • pH Range: Bursa Triggers thrive in a pH range of 8.1 to 8.4.
  • KH Range: They require a carbonate hardness (KH) level between 8 and 12 dKH.
  • Care Level: Bursa Triggers are considered to be moderately challenging to care for due to their specific requirements and potential territorial behaviour.
  • Lighting Preference: They do well with moderate to high lighting levels in the aquarium.
  • Preferred Food: Bursa Triggers are omnivorous and require a varied diet consisting of high-quality pellets, frozen or live foods, and vegetable matter.
  • Behaviour: Bursa Triggers are known for their vibrant colouration and playful behaviour. They exhibit a mesmerizing swimming motion and are often described as having a “puppy-like” character. However, they can also become territorial, especially towards other triggers or similar species.
  • Suitable for Reef Tanks: Bursa Triggers are generally not recommended for reef tanks as they have a tendency to nip at corals and may damage the delicate reef environment.
  • Discoverer: The Bursa Trigger was not named after a specific discoverer.
  • Interesting Facts: Due to their specific care needs and potential territorial behaviour, they are considered to be on the delicate side in terms of care level.

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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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The Blackbelly Trigger, scientifically known as Rhinecanthus verrucosus, also goes by the name Bursa Trgger. They can reach a maximum size of approximately 10 inches (25 cm) in length. It has a distinct appearance characterized by a robust body, a large head, and a unique colour pattern. The body is predominantly off white displaying elegant multicolour stripes and patches.


Blackbelly Triggers are known for their puppy-like character and intelligence. They display individual personalities and can become quite interactive with their owners. Their swimming motion is mesmerizing to observe as they gracefully glide through the water. These fish exhibit a curious nature and are often seen exploring their surroundings.


The Blackbelly Trigger, or Bursa Trigger, belongs to the genus Rhinecanthus and the family Balistidae. It is closely related to other triggerfish species within the same family. The etymology of the genus name “Rhinecanthus” is derived from the Greek words “rhinos” (nose) and “akantha” (thorn), referring to the spines on the fish’s head.

Natural Habitat:

In their natural habitat, Blackbelly Triggers can be found in tropical and subtropical waters of the Indo-Pacific region. They inhabit coral reefs and rocky areas with abundant hiding spots. These areas provide them with protection and suitable environments for foraging.

Keeping Blackbelly Triggers Healthy:

Blackbelly Triggers require a moderate level of care and can be moderately challenging to keep. Providing them with a spacious aquarium with plenty of hiding places, rock formations, and a sandy substrate is essential. Regular monitoring of water parameters such as temperature, salinity, pH, and ammonia levels is necessary to maintain a healthy environment.

Special Requirements and Feeding:

Blackbelly Triggers have powerful jaws and teeth adapted for crushing hard-shelled prey. Their diet should consist of a variety of meaty foods, including small fish, crustaceans, and mollusks. It is important to provide them with a balanced diet that includes both protein-rich foods and vegetable matter. Offering occasional live or frozen foods can help stimulate their natural feeding behaviour.

How Many Should I Keep:

Blackbelly Triggers are best kept singly or in mated pairs, as they can be territorial and aggressive towards conspecifics. Keeping more than one Blackbelly Trigger in the same tank may result in territorial disputes and potential harm to other tankmates.

Lighting Preference:

Blackbelly Triggers do not have specific lighting preferences and can adapt to a range of lighting conditions, including moderate to high intensity lighting.

Suitable Tank Mates:

When selecting tank mates for Blackbelly Triggers, it is important to choose species that are compatible with their territorial nature. Avoid keeping them with smaller, more docile fish or delicate invertebrates that may become targets of aggression. Suitable tank mates can include larger, robust fish species that can hold their own in the aquarium.

Reproduction in the Wild:

In the wild, Blackbelly Triggers, scientifically known as Rhinecanthus verrucosus, engage in an intriguing courtship behaviour known as the “wiggle dance.” During this display, the male triggers swim in a zigzag pattern while shaking their bodies and fins in a rhythmic manner. This behaviour is believed to attract females and signal readiness to mate.

Breeding, Bursa Trigger, Rhinecanthus verrucosus:

  1. Set-up:

Breeding Blackbelly Triggers in captivity requires a well-maintained aquarium with appropriate water conditions and sufficient space for courtship and spawning behaviours. The breeding tank should have suitable hiding places and a sandy substrate for egg deposition.

  1. Courtship/Spawning:

The courtship process begins with the male performing the wiggle dance to attract a female. Once the female is enticed, she and the male engage in a circular swimming pattern, culminating in the release of eggs and sperm into the water column. The fertilized eggs are transparent and buoyant.

  1. Rearing:

After spawning, it is crucial to remove the eggs from the main tank and transfer them to a separate rearing tank. The eggs should be kept in a well-oxygenated environment with gentle water movement. Within a few days, the eggs hatch into larvae, which require specialized rearing techniques involving appropriate nutrition and water parameters.

Sexual Dimorphism:

Sexual dimorphism in Blackbelly Triggers is not pronounced. However, males may exhibit slightly more vibrant colouration, including intensified blues and yellows, compared to females. Males also tend to be slightly larger than females.


The Blackbelly Trigger, Rhinecanthus verrucosus, is naturally distributed in the tropical and subtropical waters of the Indo-Pacific region. It can be found in areas such as the Red Sea, the Maldives, the Philippines, Indonesia, and Australia. While captive-bred and line-bred strains of Blackbelly Triggers are available in the aquarium trade, the original fish come from their natural range in the wild.


The Blackbelly Trigger, scientifically known as Rhinecanthus verrucosus, is a fascinating fish species known for its distinctive appearance and playful behaviour. It engages in a captivating wiggle dance during courtship and exhibits interesting breeding behaviours. Breeding Bursa Triggers in captivity requires specific tank set-up, courtship rituals, and careful rearing of the eggs and larvae. While not displaying significant sexual dimorphism, males may exhibit more vibrant colouration. Found in the Indo-Pacific region, Bursa Triggers are a remarkable addition to aquariums, providing both visual appeal and unique behavioural characteristics.


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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.