Deadly molly

I'm at work and got a text from my wife telling me one of the mollies was dead floating at the top. I'm afraid the larger goldfish might have nipped at her. Planning on getting rid of the gold fish. Will be doing water test and change later today. The other fish appear to be doing fine no signs. I'm really new to this so be nice

FYI 10 gallon tank water parameters last checked were within normal range temp is appropriate.

 

Sorry for your loss.
Maybe she was sick.

 

Welcome to Fishlore! Hopefully we can help figure out what's going on.

If it's a 10 gal, neither the goldfish nor the molly are appropriate for that tank size.
What other fish do you have in there?

Do you know about the nitrogen cycle? Can you give exact parameters (pH, temp, ammonia, nitrites, nitrates)?

 

Welcome to Fishlore! Hopefully we can help figure out what's going on.

If it's a 10 gal, neither the goldfish nor the molly are appropriate for that tank size.
What other fish do you have in there?

Do you know about the nitrogen cycle? Can you give exact parameters (pH, temp, ammonia, nitrites, nitrates)?

I think there are some blue danios and white cloud minnow.

 

Exactly what species and how many of each would be helpful.

 

4 danios 3 platys the tank is cycled but I don't have the exact parameters but last water check everything was norm will be doing 25% water change later today

 

Can you get water parameters? Water quality issues need to be ruled out.

The platies are fine in the tank, but danios aren't appropriate for a 10 gal. I'd rehome them.

It looks like you have more fish in that pic though.