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  1. #1
    Senior Member Rank = Kyusai Koiz's Avatar
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    Broken Leading Dorsal Fin Bone on Sorogoi

    Hi Everyone,

    Just as I think I'm finally getting on top of all my koi problems, have come out this morning to find my baby Sorogoi has broken it's leading dorsal fin bone. Gutted.

    Is it possible to repair this? I've heard of fins being super-glued together - would this work on the bone?

    Would be grateful for any input as i'm guessing if I'm going to intervene I need to do so quickly.

    I have no issues sedating and will undertake any repair necessary in an attempt to help this fish, so any suggestions or experiences are welcome.

    Thanks,
    Wendy

    Broken Dorsal Fin 02.JPG Broken Dorsal Fin 03.JPG


    Last edited by Koiz; 03-08-2020 at 08:53 AM.
    11,440L Raised Pond, BD, Oase ProfiClear, Bitron 55W, 2x10k Aquaforte Varios, Skimmer to Waterblade

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  3. #2
    Senior Member Rank = Kyusai Koiz's Avatar
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    https://www.youtube.com/watch?v=ejnbzaBAbOc

    Just found this Adam Julyan video of a prosthetic used to heal the ray on a pectoral fin. Does anyone know if this is an option for the Dorsal?
    11,440L Raised Pond, BD, Oase ProfiClear, Bitron 55W, 2x10k Aquaforte Varios, Skimmer to Waterblade

  4. #3
    Senior Member Rank = Kyusai Koiz's Avatar
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    Nothing like answering your own thread is there

    I've now spoken with Paula Reynolds, and she advised that I could certainly try super-gluing the ray, and if that fails, then best to remove the broken section with very sharp, sterilised scissors. In such a young fish, the process of ossification should allow the cartilage (as it is not bone!), to continue to grow, so that either the repair or the removal will hopefully grow out completely. Could take a year or so. How well it will repair is uncertain, ie it may have a kink.

    Trying to splint the repair is a problem in that it requires sutures that will create holes in the fin tissue, so essentially more damage or places for infection to enter. Need to bear in mind that a sharp break could cause damage to the other fish, so whatever I do, I need to ensure that the ray is left safe for everyone else in the pond. So, there are three options and I'm going to try the glue on it's own first.

    Seems as though the Power Flex Superglue I have at home is not 100% waterproof.

    Google advises Gorilla Glue: 100% waterproof and resistant to extreme temperatures. The water activated polyurethane formula expands into materials to form an incredibly strong bond to virtually anything.

    So my next question for the forum is .... does anyone have any experience with using glue underwater for this purpose and can they recommend anything?!!
    11,440L Raised Pond, BD, Oase ProfiClear, Bitron 55W, 2x10k Aquaforte Varios, Skimmer to Waterblade

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  6. #4
    Senior Member Rank = Kyusai Koiz's Avatar
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    Thought I’d update this thread with the outcome.

    Not having had any replies to my glue Q, and not being able to find a product that was 1) 100% waterproof 2) would cure quickly 3) was flexible 4) would not expand or foam during application which could compromise the rest of the fin, I decided not to use glue. I didn’t want to risk it failing, and then having to sedate the poor fish twice. So I went with removing the broken section of the ray and the trimming the fin.

    Paula had advised to ensure my scissors were razor sharp to ensure that the cartilage didn't splinter and leave sharp edges that may then cause damage to other fish. The sharpest scissors I own are hair cutting ones, so that’s what I put out on my ‘operating table’. Long story short – they failed! I was then left rushing around trying to find something strong enough to get through what I now realised is an extremely tough bit of cartilage, before the fish came out of sedation!

    Eventually I settled on my kitchen scissors, but had to use the blade close to the handles to get enough leverage to cut through the ray. I honestly had no appreciation for how hard this was gong to be to cut, and in hindsight I wonder if something like heavy duty nail clippers, or even my cat’s claw clippers, may be the best tool for such a job!

    Anyway, the hair cutting scissors were perfect for trimming the fin, so I actually needed both to do the job. Sorogoi came round nicely from the anaesthetic and a bit of Kusuri Anti-Bac iodine ensured a clean heal.

    Little fish is doing absolutely fine. It doesn’t look too bad, just a shame as she was so perfect before. Fingers crossed it’ll grow back OK. Being a young fish, she’s got a good chance it will.

    How did it happen? Well, I have nothing in the pond that would have caused this damage, so all I can think is she hit it on the coping overhang around the pond as the water level was higher than usual when it happened, and having observed some spawning type shenanigans, I’m guessing she could have been getting a bit bundled against the walls….hence why you can see spawning brushes in the pond now!

    Hope this is helpful to anyone who finds themselves in the same situation and is seeking a solution

    Removed Broken Ray 01.JPG Removed Broken Ray 02.JPG
    11,440L Raised Pond, BD, Oase ProfiClear, Bitron 55W, 2x10k Aquaforte Varios, Skimmer to Waterblade

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  8. #5
    Senior Member Rank = Kyusai Sim's Avatar
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    I have used scissors, nail clippers and some bonsai clippers (good ones are really sharp and slightly curved blade)

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  10. #6
    Senior Member Rank = Kyusai Koiz's Avatar
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    Quote Originally Posted by Sim View Post
    I have used scissors, nail clippers and some bonsai clippers (good ones are really sharp and slightly curved blade)
    Good to know. Have you ever used super glue to make a mend, and if so, what type did you use?
    11,440L Raised Pond, BD, Oase ProfiClear, Bitron 55W, 2x10k Aquaforte Varios, Skimmer to Waterblade

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  12. #7
    Senior Member Rank = Kyusai Sim's Avatar
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    Sorry no, just cut back fins etc which have grown back but haven’t done this for a long time.
    used to have a few friends that would always have problems so had plenty of practice!

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  14. #8
    Senior Member Rank = Mature Champion smartin's Avatar
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    well done Koiz, looks a neat job, thanks for sharing......
    2200 gallons,infinity window,
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