Berghia Nudibranch - Full Breeding Adult

CAD $26.99 - CAD $39.99
Bulk Pricing:

Below are the available bulk discount rates for each individual item when you purchase a certain amount

  • Buy 5 - 10 and get CAD $0.49 off
  • Buy 11 - 15 and get CAD $1.24 off
  • Buy 16 or above and get CAD $2.24 off
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Current Stock:

BULK DISCOUNTS AVAILABLE - Automatically applies when added to the shopping cart 

Adult Size
0-5 $26.99

6-10 $26.50

11-15 $25.75

16+ $24.75

XXL Adult Size
0-5 $39.99

6-10 $39.50

11-15 $38.75

16+ $37.75

Berghia are a natural predator to eradicate one of the most troublesome pest organisms in marine aquaria, Aiptasia anemones. They are therefore the most perfect and highly desirable solution for aquarist. Berghia are easy to keep and care for in a reef aquarium as long as there is food (Aiptasia) to eat and the water quality is good. They therefore will do well in most established reefs aquarium. Berghia nudibranch only eat Aiptasia. There is no point trying to feed them anything else. They get their color from the Aiptasia they eat. They absorb the pigment from the Aiptasia Berghia Nudibranch have evolved methods of approaching the Aiptasia that prevent the defensive mechanics of the Aiptasia kicking in. Aiptasia will not attack with their stinger cells nor release planula larva into the water when Berghia slugs approach like they do when other dangers approach. Some of the most important benefits with Berghia are: ◦ Berghia nudibranch will find all the Aiptasia in the tank. Even the ones hidden in crevices or too small for the aquarium owner to see and spot treat against. ◦ Chemical treatments are often sold as reef safe despite containing chemicals that may be harmful to other marine life. ◦ Chemical treatments causes the Aiptasia to die more or less all at once. This causes a lot of stress on the water. When you spot treat you can to a degree lessen this problem by treating different patches of Aiptasia at different times but you still get an entire patch dieing all at once and polluting the water. Using Berghia you do not get the water pollution problems since the Aiptasia is slowly consumed over a couple of months. ◦ Unless used perfectly most chemical treatments can cause more smaller aiptasia to grow ◦ When the Aiptasia is gone you know it is gone. The sea slugs will not miss any Aiptasia and you do not have to worry about it growing back. ◦ Berghia are very small and add a very small bioload to your tank. We recommend at least 8-10 Berghia per 100 gallons of water for a moderate Aiptasia problem (50-100 aiptasia per 100 gallons). Getting the right number of Berghia is important. You want to have enough Berghia in your tank so they can find each other to mate and lay eggs. The nudibranch eggs may hatch and continue to populate the tank until the Aiptasia are gone. Use the adult Berghia calculator below to help estimate the number of Berghia you need for your tank. Very heavy Aiptasia outbreaks may require even more Berghia.


  • 5
    Berghai Nudi’s

    Posted by Matt Drake on 2023 Jan 26th

    They came alive and kicking. They started munching on my aptasia as soon as they got into the tank. On a side note, after placing my purchase I received a call from big show in the after noon notifying me that they would be shipping my order that evening, and confirming that I would be able to receive my order the following day. I find this refreshing. The care that is shown just with that little bit of extra care is refreshing. It shows that they really care not only about their customers but also their live stock! Upon receiving my shipment it was packaged perfectly and inside the box was a bunch of extra free stickers and an amazing guide for acclimating my little Nudi’s with all sorts of little tips to help with the survival and any thing you can think of. I’m not often impressed with the way companies do business but my experience has been nothing less than stellar.

  • 5
    Best instructions how to care

    Posted by Michel Robitaille on 2023 Jan 13th

    I can’t believe it that was very useful the instructions of how to acclimate them and how to introduce them into the tank ! Packaging was very good and the communication from Bigfragshiw was just awesome and that showed how the store care for their customers and their livestock ! So I would say to everyone that don’t hesitate to buy from BIGFRAGSHIW and bigs thanks again for my order !!! Very nice team !

  • 5
    Berghia nudibranch

    Posted by RIZZIERO DI FEDERICO on 2022 Nov 11th

    Received the berghias alive and amount ordered. Followed BSF recommended acclimation method and now it’s a waiting game. But overall satisfied with the BSF experience. A la prochaine!!

  • 5
    Berghia Nudibranch

    Posted by Frank on 2022 Aug 20th

    Well they arrived the next day as promised. All of them arrived alive. Acclimated as instructed and introduced to my tank. Watched one of them eat one small aptasia then disappear into the rocks. I guess time will tell now. Hopefully they fix my aptasia problem

  • 5

    Posted by Mike Herzog on 2022 Jul 21st

    Arrived safe and sound. Packaged great with explicit instructions on how to climatize and put into tank. Got all 3 into tank and they promptly disappeared into the rock works. Hopefully they hungry for that aptasia !

  • 5
    Works great

    Posted by Catherine on 2022 May 13th

    They arrived looking great, Best shipment packing ever.

  • 5
    Arrived intact and very active

    Posted by Ron Egner on 2022 Feb 26th

    FedEx was a day delayed on delivery and all was still warm and good when finally arrived great packaging…was laying eggs soon after relocating container in my reef….very satisfied….thanks to all involved

  • 5
    Best packaging

    Posted by Brian on 2022 Feb 17th

    Excellent packaging. Best I have ever received from any vendor

  • 5
    Berghia Nudibranch

    Posted by Connie Perkins on 2022 Feb 11th

    I was so impressed with the labeling of these. Clear instructions on how to get them into the tank.

  • 5

    Posted by Aaron B on 2021 Nov 25th

    Great berghia, shipped well, and doing their job!

  • 5

    Posted by Bruce on 2021 Nov 19th

    Came well packed and timely.

  • 5

    Posted by Ralph Servin on 2021 Mar 15th

    The product was great and healthy. Well packaged and instructions were very simple.