Tropical Fish Keeping - Aquarium fish care and resources

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nawilson89 04-09-2012 02:41 PM

Two neon tetra deaths in a day.
Hello everyone,

I have a 29 gallon tank set up with a few live plants; two schools of 5 tetra. One is neon tetras the other is head and tail light tetra. I also have a school of 5 zebra danio, 2 cory catfish and a male betta who keeps to himself.

My problem is that in the course of the day a neon tetra left the group started hanging out at the top of the tank and then died a few hours later a second one left the group also. I quickly scooped him up and put him in a solo 1 gallon tank to watch him. He did the same as the first and died a few hours after isolation.

Not completely sure whats going on and ive been watching the other tetra like a hawk. I haven't been able to test the water, but all the other fish in the tank seem to be unaffected. Any thoughts?

KCheek 04-09-2012 02:52 PM

You said they were dead. How did they appear? Symptoms? Not to pre diagnose, but Neon tetras are prone to something called neon tetra disease, you should look at that if your water is fine and your fish are otherwise healthy.

nawilson89 04-09-2012 02:55 PM

The only symptom ive seen was seperating themselves from the school and staying at the top of the tank. Other then that, nothing.

KCheek 04-09-2012 03:48 PM

I pulled this off another website, it describes it better than i could. Sometimes, the fish die right away, showing little in the way of symptoms, sometimes the disease progresses through several ugly stages. I listed the first two. NTD can affect other fish, and there is no cure. just watch them carefully.

During the initial stages, the only symptom may be restlessness, particularly at night. Often the first thing an owner will notice is that the affected fish no longer school with the others. Eventually swimming becomes more erratic, and it becomes quite obvious that the fish is not well.
As the disease progresses, affected muscle tissue begins to turn white, generally starting within the color band and areas along the spine. As additional muscle tissue is affected, the pale coloration expands. Damage to the muscles can cause curvature or deformation of the spine, which may cause the fish to have difficulty in swimming. It is not unusual for the body of the fish to have a lumpy appearance as the cysts deform the muscles.

nawilson89 04-09-2012 04:19 PM

Alright well thanks so much. The remaining 5 look to be doing alright and i havent seen any of them not schooling, i will definitely be keeping an eye out for that pesky disease. Thanks for the help :)

KCheek 04-09-2012 04:21 PM

Anytime. Happy fishkeeping.

nawilson89 04-12-2012 06:02 AM

Everything has been going well for the past few days. Kept a close eye on all the neons. No symptoms no signs and bam, this morning two more were found dead. I removed all the neons from the tank and isolated them from the tank. Sad day.:-(

Tazman 04-12-2012 07:53 AM

Need to know readings for Ammonia, Nitrite, Nitrate, water hardness (GH + KH).

Is your tank cycled., how old is it.

It is impossible to speculate as to what might have caused these deaths without knowing the conditions inside your tank.

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