Home |
Search |
Today's Posts |
#16
|
|||
|
|||
Dying Koi: Can You Help?
Thanks for your help, Lee.
Nedra "Lee Brouillet" wrote in message ... BGD (Bacterial Gill Disease) is a, well, bacterial infection. If the fish become stressed or their health is compromised, they're open to infection. I did a lot of reading on it when John's fish broke with it, but I don't know where its origination point would be. It may have come in with his new fish. It may have just been there. Your fish have been in residence for quite a few years: I think they'll be OK. But I'll see if I can find an answer for you. Lee "Nedra" wrote in message arthlink.net... John and Lee, Is BGD something I need to worry about with my fish pond full of koi? They have all been in this pond all their lives and no fish have been added. None are sick ... but do I need to worry about this awful disease? Nedra http://www.geocities.com/Heartland/Pines/4836 http://community.webshots.com/user/nedra118 "johnrutz" wrote in message ... Lee Brouillet wrote: The only time I had a fish loss (my first year), it was the largest fish that died. I was leaving for work, and my two biggest koi were floating. I had an algae outbreak at the time (and other problems that aren't pertinent to your problem). Oxygen deprivation will kill the largest to the smallest, but you will find them floating in the morning with nothing to give prior warning. There are several "new things" in the koi world that will kill them: KHV (Koi Herpes Virus) and SVC (Spring Viremia of Carp). Not to mention the bout with BGD (Bacterial Gill Disease) that John Rutz just went through that has decimated his collection. The fact that your fish died slowly is indicative of a disease, not oxygen deprivation. I'm sure you've seen the mantra here about quarantine, and this is why. It's time consuming, but it's worth it to prevent the loss of your current pets. Taking a big step into nowhere, I would venture to say that the first batch of new fish were infected: they died first. The resident fish were incubating. You mention that they looked fine externally, but that their eyes looked "funny". "Funny" how - bulging or sunken? Symptoms of SVC can include: bulging eyes, abdominal swelling, bloody mucus from the vent, spider-web or skin hemorraging. Symptoms of KHV can include: head down swimming, lethargy and weakness, sunken eyes, gill lesions, sandpaper skin or a stringy slime coat, bloody sores. Not all of the symptoms need to be present: the above are "indications". You didn't mention checking the gills: their condition will go a long way towards diagnosis. The incubating fish gave it to the new arrivals. To date, I haven't heard of goldies contracting the diseases, but I've been concentrating my learning curve towards koi, as that's what I have. I don't know if goldies can be passive carriers, though. Bugs dying of CO2 died from oxygen deprivation; I don't think they would poison the fish. Contaminents from the yard were eliminated (you said you don't use poisons). From my understanding, earthworms are pretty primitive, and if they were sick or toxic, they would die pretty quickly. NEVER feed a dead earthworm to the fish, but live ones are safe (or they'd be dead!). Most airborne poisons would have done in your goldies, too. If your water parameters were in shape, and your pond does not suffer from oxygen deprivation (airstones are NEVER a bad idea!), I'd say you were a victim to one of the above diseases. Please set up a quarantine tank: it's much less painful than losing pets. The days of purchasing fish and turning them loose in your pond are gone: the spectres of KHV and SVC are REAL. Reports of these diseases used to be "isolated" a year or two ago; it is now estimated that 50% of the breeders have been exposed. And it's growing geometrically. If there is anything else I can help with, please let me know. Lee I'll add a couple of the signs of BGD are laying on the bottom and upon examination mucus on the gill plates John Rutz Z5 New Mexico never miss a good oportunity to shut up see my pond at: http://www.fuerjefe.com |
#17
|
|||
|
|||
Dying Koi: Can You Help?
Nedra wrote: John and Lee, Is BGD something I need to worry about with my fish pond full of koi? They have all been in this pond all their lives and no fish have been added. None are sick ... but do I need to worry about this awful disease? Nedra http://www.geocities.com/Heartland/Pines/4836 http://community.webshots.com/user/nedra118 according to the information lee found it seems to mainly come on with the addition of new fish (which is what I did ) I havent found anything which says it can be dormant in a pond and start from there,, so I dont think you should worry unless you add a new fish I quarantined mine for the 30 days+ looking back I think the new fish were showing symptoms but I didnt know what I was looking at and missed it John Rutz Z5 New Mexico never miss a good oportunity to shut up see my pond at: http://www.fuerjefe.com |
#18
|
|||
|
|||
Dying Koi: Can You Help?
Thanks John. You have relieved my worries!
Nedra http://www.geocities.com/Heartland/Pines/4836 http://community.webshots.com/user/nedra118 "johnrutz" wrote in message ... Nedra wrote: John and Lee, Is BGD something I need to worry about with my fish pond full of koi? They have all been in this pond all their lives and no fish have been added. None are sick ... but do I need to worry about this awful disease? Nedra http://www.geocities.com/Heartland/Pines/4836 http://community.webshots.com/user/nedra118 according to the information lee found it seems to mainly come on with the addition of new fish (which is what I did ) I havent found anything which says it can be dormant in a pond and start from there,, so I dont think you should worry unless you add a new fish I quarantined mine for the 30 days+ looking back I think the new fish were showing symptoms but I didnt know what I was looking at and missed it John Rutz Z5 New Mexico never miss a good oportunity to shut up see my pond at: http://www.fuerjefe.com |
#20
|
|||
|
|||
Dying Koi: Can You Help?
My apologies: I usually "disappear" on the weekends.
Please read this article: http://tinyurl.com/i9oy It will go a long way towards explaining what can be done to "cure" fish of KHV, and to force them to "break" with the disease if they have it. It will answer your questions. So far, SVC doesn't have any procedure to assist the fish: they will die, plain and simple. As far as sterilizing the pond is concerned, it's complicated and "if-fy" at best. The three diseases I mentioned are all viral, not bacterial, and therefore much more difficult to erradicate. Its kinda like a lot of other things: the best offense is a good defense. Eliminate the problem before you have one: Quarantine and run the temp up. I cannot emphasize enough the importance of testing your water. You need to test for ammonia (if you use a water treatment for chloramines, you need the 2 part (salycilate) test, not the 1 part (Nessler's) test. Actually, from what I've read, it won't be too long before this warning will not be necessary: the EPA wants the Nessler test removed from the shelves due to its mercury-based testing protocol. But I digress: you need tests for ammonia, nitrIte and a high-range pH test. A test for KH (total alkalinity) is worth its weight in gold. A test of nitrAtes is good inasmuch as it will tell you when a new filter kicks in, and is useful in determining the amount of "ambient fertilizer" is available for plant use (if you have them). A test kit for salt is also a good thing to have on hand, although if you can afford it, a salt meter is much more accurate. Don't let them sell you the hydrometer used in salt water aquariums: they use salt levels of *. (decimal point), and we use salt levels at (decimal point) .* (BIG difference). If you're draining your pond anyway, check your water meter before/after filling for accurate readings for the gallons. If you can't do that, go to the garden center of Home Depot or Lowe's and buy one of the meters that attaches to the end of the water hose (about $20). It's *important* to know EXACTLY how much water you have in your pond when it comes time to medicate it: L x W x D x 7.8 just doesn't cut it except if you have a shoebox for a pond (straight sides and flat bottom). Sloped sides, plant shelves, uneven bottoms all contribute to much less water than you *think* you have. When you need to medicate the pond, you need to know how much water you really have, including plumbing and filters: too much or too little medicine and you have dead fish or undermedicated ones. I hope this helps. Let me know if there are other questions I can (hopefully!) answer. Lee "Richard C. Eberhardt" wrote in message ... Everyone, Thanks for all of your suggestions - and words of sympathy. I have such respect for the people in this group! I would have responded more quickly, but it's been a really bad week.... I have had ponds for about 15 years and always have to remind myself that keeping animals outdoors is a risky thing. I always tell myself not to get too attached the them for that reason, but that never sticks for long. Lee: a few things in your description of KHV reminded me of things I observed, but did not relate: "sunken eyes" is a good description of how their eyes looked and "head down swimming" was also something I had never seen before the last two weeks, but did observe in a few of the fish. Montanan: I am still trying to get in touch with the village about any mosquito spraying that might have gone on. I need to check with more neighbors about possible plant spraying. I have disconnected the mosquito magnet as well. The two goldfish survivors seem to be doing OK, but they lost those big brave koi friends, which always seemed to calm them down. I plan to buy a water testing kit today and change out about 50% of the water while I clean up the pond. Does anyone have any ideas on starting over: treating the pond to lower the likelihood of infection of new fish? Thanks, Rich in Chicago |
#21
|
|||
|
|||
Dying Koi: Can You Help?
On 28 Jul 2003 08:57:19 -0500, "Lee Brouillet" wrote:
My apologies: I usually "disappear" on the weekends. Please read this article: http://tinyurl.com/i9oy It will go a long way towards explaining what can be done to "cure" fish of KHV, and to force them to "break" with the disease if they have it. It will answer your questions. And an excellent article on quarantine is at this website: http://www.koivet.com/html/articles/...t%20 Articles ~ jan See my ponds and filter design: http://users.owt.com/jjspond/ ~Keep 'em Wet!~ Tri-Cities WA Zone 7a To e-mail see website |
#22
|
|||
|
|||
Dying Koi: Can You Help?
Rich,
Sorry about your loss, and I hope you are not beating yourself up too much. The infection did not necessarily come with your new fish! When I got hit, twice, the first time was from birds visiting my pond! They must have been in an infected pond, and then brought it to my pond! Of course the second time was indeed from the new fish without quarantine! Hope your start over will be trouble free. -- _______________________________________ "The difference between 'involvement' and 'commitment' is like an eggs-and-ham breakfast: The chicken was 'involved' - the pig was 'committed'." http://community.webshots.com/user/godwino "Richard C. Eberhardt" wrote in message ... Everyone, Thanks for all of your suggestions - and words of sympathy. I have such respect for the people in this group! I would have responded more quickly, but it's been a really bad week.... I have had ponds for about 15 years and always have to remind myself that keeping animals outdoors is a risky thing. I always tell myself not to get too attached the them for that reason, but that never sticks for long. Lee: a few things in your description of KHV reminded me of things I observed, but did not relate: "sunken eyes" is a good description of how their eyes looked and "head down swimming" was also something I had never seen before the last two weeks, but did observe in a few of the fish. Montanan: I am still trying to get in touch with the village about any mosquito spraying that might have gone on. I need to check with more neighbors about possible plant spraying. I have disconnected the mosquito magnet as well. The two goldfish survivors seem to be doing OK, but they lost those big brave koi friends, which always seemed to calm them down. I plan to buy a water testing kit today and change out about 50% of the water while I clean up the pond. Does anyone have any ideas on starting over: treating the pond to lower the likelihood of infection of new fish? Thanks, Rich in Chicago in article , Lee Brouillet at wrote on 7/25/03 8:57 AM: The only time I had a fish loss (my first year), it was the largest fish that died. I was leaving for work, and my two biggest koi were floating. I had an algae outbreak at the time (and other problems that aren't pertinent to your problem). Oxygen deprivation will kill the largest to the smallest, but you will find them floating in the morning with nothing to give prior warning. There are several "new things" in the koi world that will kill them: KHV (Koi Herpes Virus) and SVC (Spring Viremia of Carp). Not to mention the bout with BGD (Bacterial Gill Disease) that John Rutz just went through that has decimated his collection. The fact that your fish died slowly is indicative of a disease, not oxygen deprivation. I'm sure you've seen the mantra here about quarantine, and this is why. It's time consuming, but it's worth it to prevent the loss of your current pets. Taking a big step into nowhere, I would venture to say that the first batch of new fish were infected: they died first. The resident fish were incubating. You mention that they looked fine externally, but that their eyes looked "funny". "Funny" how - bulging or sunken? Symptoms of SVC can include: bulging eyes, abdominal swelling, bloody mucus from the vent, spider-web or skin hemorraging. Symptoms of KHV can include: head down swimming, lethargy and weakness, sunken eyes, gill lesions, sandpaper skin or a stringy slime coat, bloody sores. Not all of the symptoms need to be present: the above are "indications". You didn't mention checking the gills: their condition will go a long way towards diagnosis. The incubating fish gave it to the new arrivals. To date, I haven't heard of goldies contracting the diseases, but I've been concentrating my learning curve towards koi, as that's what I have. I don't know if goldies can be passive carriers, though. Bugs dying of CO2 died from oxygen deprivation; I don't think they would poison the fish. Contaminents from the yard were eliminated (you said you don't use poisons). From my understanding, earthworms are pretty primitive, and if they were sick or toxic, they would die pretty quickly. NEVER feed a dead earthworm to the fish, but live ones are safe (or they'd be dead!). Most airborne poisons would have done in your goldies, too. If your water parameters were in shape, and your pond does not suffer from oxygen deprivation (airstones are NEVER a bad idea!), I'd say you were a victim to one of the above diseases. Please set up a quarantine tank: it's much less painful than losing pets. The days of purchasing fish and turning them loose in your pond are gone: the spectres of KHV and SVC are REAL. Reports of these diseases used to be "isolated" a year or two ago; it is now estimated that 50% of the breeders have been exposed. And it's growing geometrically. If there is anything else I can help with, please let me know. Lee "Richard C. Eberhardt" wrote in message ... Well, all the koi are dead now: the pretty 12" ones I had for six years and the 3 new ones added this summer. They seemed to die one at a time, from largest to smallest animal. None of the casualties showed any signs of bruises, parasites, fungus, etc. They just stopped eating, became listless, eventually had problems with buoyancy, and died. The two goldfish which have been in the pond for a long time still seem fine. To help analyze this and perhaps to serve as a warning, I will list the steps which led to this end and recount all of the changes to the yard/pond made this year. If anyone can point out something, I would appreciate it. I have a beautiful empty pond which I would love to restock with small koi, but I am a little afraid right now. Changes in the Fish Community 1) I had 4 12' koi (raised in my ponds for 6 years) and a couple of 4" goldfish in the big pond together for more than a year now. I had the big pond built last summer as a home for the big guys. 2) About a month ago, I picked up 5 small koi (part of the deal I got with my pond). I put them in my old pond with some goldfish for about 10 days. These fish were not great fish, but they were free. Two died pretty quickly and the rest were very jumpy. But they looked OK so I put them in the new pond. 3) The new koi all died in the new pond over the course of about 10 more days. 4) Everyone left seemed OK so I added 3 more 5" koi (from a better dealer - these ones were not so jumpy and looked very healthy). 5) About a week later, I noticed that the big koi were not eating normally. Which is to say that they were not constantly ready to eat. Generally, if you kept ladling food, they kept eating it. 6) The big koi died first then one died every other day - pretty much largest fish to smallest fish (but only the koi). No visible parasites, wounds, fungus, etc. although their eyes looked funny. They became listless and hovered rather than swam. They spent a lot of time at the bottom of the pond in the the heron shelter I built. At the end, the floated on the top, not moving at all (as if paralyzed), just breathing. Changes in the Yard 1) Added more mulch around the pond (from a different nursery than last year). 2) While digging in the yard, fed any earthworms I found to the koi (I don't use herbicides or pesticides). 3) Added a mosquito magnet about a month ago. This burns propane to create CO2. This was about 15 feet from the pond at a lower level than the lip of the pond. (Note: this is about 20 feet from the old pond which is full of goldfish and has not had these problems). 4) I noticed that the pond has a frog visitor. My Ideas 1) I introduced some strange koi disease with the new fish. It would be something that does not leave a mark and strikes the largest animals first. 2) The worms were toxic, leading to a slow death for the koi. 3) The CO2 plume emitted by the mosquito magnet created a CO2 pool over the pond, resulting in a low oxygen situation. The fish were gradually poisoned by the gas. The larger the respiration system, the faster the succumb. Any Ideas would be appreciated, especially advice on how to safely start over. Thanks, Rich in Chicago |
#23
|
|||
|
|||
Dying Koi: Can You Help?
"Richard C. Eberhardt" wrote in message ... Well, all the koi are dead now: the pretty 12" ones I had for six years and the 3 new ones added this summer. They seemed to die one at a time, from largest to smallest animal. snip Without knowing water parameters, pond size, filtration, etc...My first guess would be a spike that altered water quality. Could the older long term fish be more sensitive to spikes? BV. |
#24
|
|||
|
|||
Dying Koi: Can You Help?
"Lee Brouillet" wrote in message ... The only time I had a fish loss (my first year), it was the largest fish that died. I was leaving for work, and my two biggest koi were floating. I had an algae outbreak at the time (and other problems that aren't pertinent to your problem). Oxygen deprivation will kill the largest to the smallest, but you will find them floating in the morning with nothing to give prior warning. snip Interesting...I was given some GF's and one was football sized. After 2 weeks, we found him floating partially eaten. I assumed it was a critter attack, but now I wonder. BV. |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Koi Food - what are you feeding your koi? | Ponds (moderated) | |||
dying tree- can you help? | Gardening | |||
Help: Fish STILL dying (was "fish are dying" | Ponds | |||
Help... Dying Koi! | Ponds | |||
Is my lewisia dying back or actually dying! | United Kingdom |