Cory Panda dying in my tank

[maverick786us]

I bought 4 Cory Panda for my tank so that they can enjoy schooling. In 2 weeks I was shocked to see one of Cory dead.3 weeks later Another Cory dead and one Cory missing (not sure of hiding or gone) I felt pity to see a lonely Cory. So today I bought 3 more Cory Panda to company her.

In all my other tanks, I have regular Corydoras and there hasn't been a single casualty, these catfishes are immortal, there were cases when ammonia poisoning killed Cardinal Tetras and Betta in other tanks, but Cory and Siamese were tough surviver. I really don't understand whats wrong with these Cory Panda. My tank is healthy. Other fishes Albino Angel fish, Harley Quin Rasboras, Hillstream Loach, Bristlenose Placos and Siamese Algae eaters are enjoying they play a lot. The problem only lies with these poor Cory Panda.

 

[Teleos]

The problem only lies with these poor Cory Panda.

I don't believe that.

 

[PARAGUAY]

It's hard to say based on the information, maybe a guess the fish were suffering from some bacterial infection, but adding new fish before you know the cause l wouldn't do that. I would do some waterchanges every couple of days or so and try and find the dead fish which will impede water quality if left in the tank. Losing fish is upsetting we all know how it feels. Rule out any possible ammonia or nitrite . Careful not to overfeed.Just observe the aquarium

 

[maverick786us]

Infection was the first thing that strike my mind. But then I realized that other inhabitants were unaffected. I have read some articles, where Cory have the tendency to commit suicide, and bristle nose placos killing them, could this be the reason?

 

[mort]

I agree with Paraguay that's it's not a good idea to add new fish if you have recently lost some, especially if you don't know why. With cories, bacterial infection is my first thoughts as well because they act like a "canary in a coal mine" due to their snuffling in the sediment. They can easily pick up infections through abrasions on their barbels and it's a good idea to monitor how these barbels look. If they have been rubbed down or are missing, then it's a sure sign of a problem.

A lot more information is needed to diagnose the issue.

 

[Teleos]

I have read some articles, where Cory have the tendency to commit suicide, and bristle nose placos killing them, could this be the reason?

You might want to watch the following video first:
YT Aquarium Coop about the first 60 days

An maybe you find also some useful tips here:
aquariumscience.org

And forget the statements about "commit suicide". I cannot believe that such nonsense is being spread.

Edit:
One more video:
YT Aquarium Coop 16 Years of Planted Aquarium Experience

And of course all you can find in this forum. General Planted Tank Discussions