Please Help-my Guppies Are Dying But Not My Other Fish!

[ema24bubbles]

Hi, am i doing something wrong, iv got a 80litre tank, with
1 x cat fish
2 x shrimp
5 mollies
4 tetras
3 guppies did have 5

I put my guppies in 3 days ago, and each morning i have work up iv found one guppy dead.could i have brought sick guppies? although they are really lively chasing my mollies round, just dont understand..
None of my other fish have died, i got 8 mollie fry in another tank- darent put them in incase they die now...

what should i do? i dont want any more die lol
the temp is at 27, maybe this too high?

any advice will be greatly appreciated thanks

 

[glolite]

What are your water stats ie ammonia, nitrite?
How long has the tank been set up?
The more information you can give us the more help we can give you

 

[waterdrop]

Completely agree with glolite! For your 80L/20G tank we need much more info to get started:

Water chem readings: ammonia, nitrite(NO2), nitrate(NO3), pH (and test kit type)
Filter type and each type of media in it.
Days/weeks/months since tank was first filled.
Any chemicals added or anything else you can think of like that.
Days/weeks/months since each type of fish introduced.
Maintenance habits (water change and filter clean frequencies)
Do you clean filter media in tap water?

~~waterdrop~~