At a loss ---- danios dying

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brimac41

Aquarium Advice Activist
Joined
Jan 16, 2010
Messages
188
Location
Ashland , Ky.
I awoke Tuesday morning to find one of my Danios dead . The next day another died , the next day yet another died and then the next one more died . They have been in there since the first of Jan . All other danios , Serpae and Red-eye Tetras are healthy and happy . Their fins are erect and in perfect condition , no signs of distress , they are eating well and swimming around happily chasing each other . My water quality is as it is has always been , well within the ideal parameters . The only difference is that , even though I rinsed my plants off well before I put them in my aquarium , I am now having a snail problem . I have lost count of how many of the little things I have found in there and disposed of .

I know that it is inevitable to lose fish . But 4 in a row that fall like dominos has me scratching my head . None had any signs of disease except the color on the sides of the second one to die was somewhat faded . The all were eating well and all but one "looked" to be in perfect health the night before then I wake up to find them dead .
 
I don't know what happened to your but I've been in the same boat before. At one time I had about 7 danios and they were good for about 3-4 months and then all of a sudden all but 2 died over the course of a couple days. No other fish were effected. The other 2 are still going strong another 4 months later...
 
I would like to add that I could post pictures but even dead , they looked fine and showed no signs of why they should have died . And since no others are showing any signs of illness or distress I can not give any kind of description as to their "ill health" .

Maybe I am looking for a "that's how it goes" type of thing .

On a side note , how do I get rid of these snails ? I haven't seen anymore for a few days .
 
I don't know what happened to your but I've been in the same boat before. At one time I had about 7 danios and they were good for about 3-4 months and then all of a sudden all but 2 died over the course of a couple days. No other fish were effected. The other 2 are still going strong another 4 months later...


I am wondering how old they were when I bought them . They were full grown at the time of purchase , so I am wondering if they were given to the LFS by someone who had tired of them or used them to cycle a tank . I know that has been done .
 
Ya know, I just lost 5 of our giant danios since Thursday night. No idea why, water conditions are perfect (tank is over a year old, cleaned every week etc) Just found them floating in the plants.

I'm chalking it up to them being well over 2 years old, and possibly at the end of their life cycle. Factoring in that they were almost full grown when we got them and they spent a year and a half in another of our tanks and half a year in this specific tank.
 
+1. Some fish die naturally younger than others. The only other thing that would make sense to me was a contaminant, but I'd expect that to have more devastating affects.
 
+1. Some fish die naturally younger than others. The only other thing that would make sense to me was a contaminant, but I'd expect that to have more devastating affects.


I thought that also (contaminants) . But so far all other fish are doing great , so I really do not think that is the problem . Maybe it was just their time to go . I just have never had any of my fish go like that , one after another , so quickly .
 
Sorry for your loss.

To get rid of your snails, put a stiff piece of lettuce in your tank. Let it sit overnight, and when you wake up, it should be covered in snails. Remove the lettuce, and many snails with it :D

Also, reduce feeding, gravel vacuum more/harder, and keep up with the PWCs. Good luck.
 
yeah, i had 5 danios once, with 2 opaline gouramis and a pleco, a danio died due to the pleco dying. then the other four were in perfect health for a much longer time. then i came home one day and all four were dead, yet the gouramis and the turtle i added were all fine and still are.

sad to see them go even though they were difficult to catch when cleaning out the tank, they got so big =[
 
Sorry for your loss.

To get rid of your snails, put a stiff piece of lettuce in your tank. Let it sit overnight, and when you wake up, it should be covered in snails. Remove the lettuce, and many snails with it :D

Also, reduce feeding, gravel vacuum more/harder, and keep up with the PWCs. Good luck.


I'll give that a try , thanks . So far they have been tiny little things , but this morning I removed one that was rather larger (about the size of a pea) , it's been hiding sonewhere .
 
Hmmm.. this is pretty interesting. Is it possible for the danios to die off because when one goes the others weaken? I think some fish will die without their mates? Did you buy them all at the same place? Maybe they were just old and it was their time... but I still think it is weird how everyone has had this issue with danios.
 
I had a group die too, but I think that they may be more sensitive to chlorine/chloramine or changes in Ph.
 
My pH has always been steady . And I have found Danios to be very hardy . I guess it's just one of those "that's how it goes " kind of things . All the other fish are doing great , including the danios that are left .
 
Sorry to hear about such misfortune.

My second place to investigate sudden die offs of otherwise healthy fish, after water quality/chemistry (pH/GH/KH), is a chemical pollutants, e.g. cleaning chemicals, deodorants, insecticides and etc.
This come from first hand experience with a aerosol, had to be 15' feet from the tank, tank was hooded even, but sure enough, there was a chemical sheen and we lost a shoal of a dozen+ Neons and some others.

We skimmed the surface, did a 80% PWC and added carbon for a day.

We no longer openly spray anything in the house, cleaning agents go straight onto a rag, and any aerosols/mists/powders, mean covering the tanks.
And I mean covered, one can never be too careful with long established tanks/fish ;)

Examples, these were done while cleaning carpets.

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img_1121739_2_e5814df99dee2d30181ea19b4f002ed8.jpg
 
Sorry to hear about such misfortune.

This come from first hand experience with a aerosol, had to be 15' feet from the tank, tank was hooded even, but sure enough, there was a chemical sheen and we lost a shoal of a dozen+ Neons and some others.

We no longer openly spray anything in the house, cleaning agents go straight onto a rag, and any aerosols/mists/powders, mean covering the tanks.
And I mean covered, one can never be too careful with long established tanks/fish ;)

Wow, I need to be more careful with this stuff; that is one of those things that didn't even cross my mind. I mean when I am cleaning I don't spray stuff by the tank, but I do spray in the air. Thanks Chile you have so much good info on this hobby!
 
Wow, I need to be more careful with this stuff; that is one of those things that didn't even cross my mind. I mean when I am cleaning I don't spray stuff by the tank, but I do spray in the air. Thanks Chile you have so much good info on this hobby!
Thank you, I just want to learn and help others.
Wisdom learned the hard way needs to be shared.
And my wife and I learned alot about fish keeping the hard way :(
 
I am sorry to hear that; it is just part of the hobby unfortunately. And this may sound bad but at least your experience can go to help others. I am going to cry the first time a fish dies. I am starting to worry about if all of my otos will make it with my puffer.
 
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