koi flashing and jumping


The ones that appear as "lumps" are the type that seem most responsive to disappearing with warm water after showing up in colder temperatures. As this is a virus, it can be contagious. In such a case where you see a couple of fishes jump in their pond, let us say at least once or twice every two weeks, then all is fine.

If you have noticed your koi fishes jumping in their pond, you might get a little worried as you might think that something is entirely wrong with them. If only one or a small percentage of fish show symptoms, and these symptoms appeared over a period of weeks, (one fish at a time), and the water tests ok then the culprit is more likely to be pathogens like bacteria or parasites, especially the latter.

They are both simply signs that something is irritating the fish, and they are trying to get rid of that irritant. Other bugs aren't as picky and hang out in a place that is the safest or the tastiest, as some bugs actually feed on the fish.

(point 05 percent). Now, in all of this, we are still forced at times to diagnose without a scope and without a culture test.

Because it is a secondary affliction, you will need to address the initial cause for a complete cure, but either way you should treat the area of the growth. It would also be a good idea to isolate the fish to a tank, as opposed to treating the entire pond, but either way the pond should be thoroughly cleaned, especially if Epistylis and/or Columnaris are suspected. You can read more on this and other treatments in another section of this website entitled Koi/Pond Emergency. As a matter of fact, I'm not even sure that Koi play in any manner, and as far as jumping after bugs, it is rare to ever see a Koi or goldfish do this. So we are in better touch than the hobbyist may be just for this reason alone.

Tricide Neo also works for this but instead of following the label direction you could simply apply the powder with a Q-Tip directly to the infected area. During the first treatment in the outside system, the fish flashed quite a bit that afternoon around 5PM. This means you would need a properly sized tank that is covered to prevent the fish from jumping out. Also be sure to see the symptom "Gasping" for other possible causes. As a matter of fact, it's the lower levels that do so more often than not. Further, if it is the mating season, they can behave in an erratic way which may cause them to jump as they bash against one another.

Aeration can be achieved with the use of electric air pumps, water falls or fountains.

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This inspection will give us clues as to why the fish may have gotten this disease. Now back to the four primary reasons fish get Dropsy. Higher levels of ammonia can show other symptoms, such as red fins, clamped fins, fin twitching, and excess slime coat on the body as well Also hanging in the water, or gasping at the surface. If this is the case, it is still very possible to inspect and notice these issues from pond-side. The signs of a swim bladder problem include lying on their sides and floating upside down.

In addition to the above symptoms, newly purchased Koi will sometimes jump. Many times in this case it is simply that this particular fish cannot tolerate the cold well. When Columnaris breaches the fish’s slimecoat and skin, it then invites other, equally nasty bacteria to get a grip. A few things can cause this. The video below shows flashing/rubbing behaviour and what to look out for: Sometimes, the gill rakers (located on the gill arches, and functioning as a food filtering system as the koi eats) become clogged with food when eating. With bacterial issues, you must remember that these are usually secondary invader. Well the fish have similar sensitivities.

You really do not have much to worry about as the causes of this behavior can be a good thing and a bad thing (even if it is a bad thing, it is not the worst-case scenario) So why do koi fishes jump? I would also use salt to .3% in this situation as well, leave for one week to see if symptoms subside. If not it is then time to use other stronger types of treatments, like Diquat, Potassium Permanganate and some others we sell. In the past it was said that these lumps or patches would only appear in cold waterand disappear when the water warmed to the upper seventies. This is due to the fact that these wounds will heal from the outer edge and work in towards the center.
You should still check all water parameters to be sure. Well, we do it all of the time here and have very few issues. So as you can see, some issues are very subtle and it takes a trained eye to notice potential problems such as this.


Their slime coats are always affected to a degree; it is only the degree that changes from pull to pull. You can see in the photos below what I mean. We also recommend reading our following articles for further explanation: In such a case that you have a sick fish, be sure to separate him or her from the rest of your koi fishes. Another critical aid in curing Dropsy of any type or origin is maintaining a salt level of at least .6% (point six percent or 6 ppt). Give them a day or two and they will become less skittish most likely. Occasionally when they have eaten near their fill they will only eat the heads and leave the headless body laying around. Gill and skin flukes, ich, and koi herpes virus result in itching, gill and scale irritation, pain, potential fin rot, scales falling off, and even mortality if not properly treated, with flashing being a telltale sign of their presence. Therefore, you need to do a deep cleaning.

So in the cold water the bugs simply do not move around much at all.

Flashing behaviors can occur with new fish as they grow accustomed to their new environment. Also any type of algae treatment can cause this. Hey! This fish actually belonged to a hobbyist in the USA. No matter the reason, when this kidney failure occurs, they literally swell with fluids, and their eyes start bulging out from the excess pressure of those fluids building inside the fish. Lots of organic material  (muck in a pond or filtration), or a huge fish load provide a bountiful food source and even a prime living environment for columnaris.

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