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Koi and pond security / protectionDiscuss methods of protecting your fish and pond equipment from animals and thieves.
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Top Poster: markf1fan (3,500)
hi everyone i have enjoyed looking at this forum and can see some great advice is there for me, at the middle of last week my pond with 13(unlucky) fish all koi except a 20+ yr old comet was attacked by a otter it pretty much devestated my pond and took 8 fish mainly the 1s about 2lb alot were hidden with tail fin and the face bitten and left to die, theres quite a bit to add but il keep it short, my question is 1 of the fish that was left has the upper part of its tail fin was bitten it looks ok but im concerned incase of infection so what would be good to know is would a fin treatment for the whole pond be the answer or catching the koi and treating it with something iv got a solution which i use for carp fishing or is there anything someone could reccommend my main concern was not stressing the fish anymore due to this happening last week look forward to hear from you. just to add i have a pond thats capable of keeping charles bronson in so my remaining koi and there 4 new inmates will be safe from these "cute" animals which seem to be eating every fish in suffolk.
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Hi,
my commiserations, I have suffered two destructive and devastating attacks by these lovely creatures, so I can understand your frustration anger and distress. I have installed an electric (pulse) fence around the pond perimeter, which (touch wood) has worked until now. I also made it almost impossible for the critters to get into my garden, by installing strong mesh fencing up to 1.2 metres height around the garden fence. I have it on good information that they can not jump higher than this.
Additionally, spreading Lion dung around the garden perimeter is an excellent deterrent (so I am told), so I bought some on eBay too......
I figured if I keep them out of the garden, I keep them out of my pond. So far, I am happy to report that all of these measures have worked.
best of luck, and please dont take the otters for granted as they are very cunning. They are not top of the food chain for nothing......
Welcome to the forum, pity the circumstances could not be happier ones.
Agree that trying to avoid an infection in the damaged fish is a sensible step. I'd suggest Chloramine T at a dose of 1gram per 100 gallons for 3 days running. This will lower the bacterial count in the system and help avoid infection.
otters leftovers 
Otter attacks 
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