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White Koi with black spots?


Peter Gowman

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I bought a white Koi last year (May). Some small black spots have appeared (about five, about the size of a bold fullstop .). One is on a gill cover, the rest being on it's flanks.

Is it normal, harmless? I don't have a clue. Anybody got any suggestions?

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Peter,

 

Depending on how old your Koi is, it can change colour & pattern for quite some time before it settles permanently, have a close look it may be simply colour pigment developing.

 

Another possibility is it could be a small parasite - sorry I can't remember it's name - that attaches itself to the body of the fish & is roughly the size you mention. I've seen it on Carp & also Roach in a pond I used to fish regularly. Oddly enough, these black spots enhanced the look of the fish & did'nt appear to harm them, not that I'm suggesting you leave them by the way!!

 

One more possibility is if your fish has had some infections on it's body at some time, when the problem heals it can leave colour marks where it was. I had a white Goldfish that developed some small ulcers & when I had cured them, they healed leaving permanent red spots.

 

Hope thats of some help.

Peter.

 

The loose lines gone..STRIKE.

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Thank you Peter and Koi carp. The fish is behaving OK and feeding OK. It is approximately 15cm long. So, hopefully everything will be OK. I must take time out to read up on keeping Koi in more detail. I've read a few publications, but there was no hints to what this may be.

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Peter,

 

I have a KOI about 12" long, it started getting spotty (5 spots too) around the time when it was 10 inch in length. I think yours has the same as mine . . it is colour pigmentation . . my orange / white carp is not orange / white with a few blue patches now..

 

nothing to wory about

hey waddaya know I can spell tomato !

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peter mccue:

Another possibility is it could be a small parasite - sorry I can't remember it's name -

Argulus?

 

If the fish are acting normally I would just keep an eye on them and not worry too much. If the condition persists or increases, try to catch one in a net and examine close up. You are an angler, and therefore know how to handle fish properly. See if the spots can be 'scraped' off. If they can then it will be a parasitic or (less likely) a bacterial infection.

 

Are any other fish infected?

 

Take care

John S

Quanti Canicula Ille In Fenestra

 

Species caught in 2017 Common Ash, Hawthorn, Hazel, Scots Pine, White Willow.

Species caught in 2016: Alder, Blackthorn, Common Ash, Crab Apple, Left Earlobe, Pedunculate Oak, Rock Whitebeam, Scots Pine, Smooth-leaved Elm, Swan, Wayfaring tree.

Species caught in 2015: Ash, Bird Cherry, Black-Headed Gull, Common Hazel, Common Whitebeam, Elder, Field Maple, Gorse, Puma, Sessile Oak, White Willow.

Species caught in 2014: Big Angry Man's Ear, Blackthorn, Common Ash, Common Whitebeam, Downy Birch, European Beech, European Holly, Hawthorn, Hazel, Scots Pine, Wych Elm.
Species caught in 2013: Beech, Elder, Hawthorn, Oak, Right Earlobe, Scots Pine.

Species caught in 2012: Ash, Aspen, Beech, Big Nasty Stinging Nettle, Birch, Copper Beech, Grey Willow, Holly, Hazel, Oak, Wasp Nest (that was a really bad day), White Poplar.
Species caught in 2011: Blackthorn, Crab Apple, Elder, Fir, Hawthorn, Horse Chestnut, Oak, Passing Dog, Rowan, Sycamore, Willow.
Species caught in 2010: Ash, Beech, Birch, Elder, Elm, Gorse, Mullberry, Oak, Poplar, Rowan, Sloe, Willow, Yew.

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