Molly’s sitting upside down at bottom of tank please help!!

[Ben Jepsen]

I have a 25 gallon fish tank, In the last 3 day I’ve lost 11 out of 13 fish ( 2 angles 6 tetras 2 mollies and 1 telescope eyed goldfish) the only survivors were two other balloon belly Molly’s. The fish all did the same thing, go to the bottom of the tank lay upside down or on there side then pass away, I first noticed it with one of my angles a week ago. My tank levels seem healthy ( 7.5ph, 0.50 ammonia, 0 Nitrate/ No2- and 5.0 No3- / nitrate, I don’t know what to do know please help!! -Ben

 

[mikey11]

how long have you had this tank running?

how long have you had all the fish?

what have you done in the past 2 weeks to the tank / maintanance?

 

[Byron]

Agree, we need that information. I would also mention that there are too many fish for this tank, and some are not compatible. So please do not acquire any replacement fish; once we sort out the issue, we can deal with the species suitability.

 

[FisherFin]

The temperature requirements of the Angel Fish and Goldfish are quite different, that could explain why the angelfish died first. The tank needs to be at 26^C minimum for Angelfish.