Guppies dying one by one in a mixed tank!!

Hi All,
My 15 gallon tank was fine until day before yesterday. Then one guppy dies on the same day. Yesterday 2 guppies died. Tank includes neon tetras, zebra danios. They all fine. Now, 2 guppies staying at the bottom of tank. Is it any disease to guppies alone? I changed 75% water day before yesterday.

 

Could you please fill out the emergency template?

 

How long have you had the guppies, and where did you get them? If you got them from a store, and fairly recently, I'm not surprised. Many fish keepers, including me, have struggled mightily to get commercially raised guppies to live longer than about four weeks. Guppies from private breeders seem to be much hardier.

 

10+months. I got them from a local fish store. They were there before the tetras and danios. Luckily in our place we get healthy guppies.

 

I think that's pretty good for guppies honestly. I don't think they live very long.

 

I think that's pretty good for guppies honestly. I don't think they live very long.

Agree, 1 year is pretty good for store bought. Even for tank bred, I start considering them old once they're much older than a year. They're great-grandparents by then .

 

But death on successive days made me think something is wrong within the tank.