Molly With Blood Near Gills - Is This Normal?

hI there, I am a new fish owner. One of my mollies looks like it has blood building near it’s gills, is this normal for this colour of molly?

 

Welcome to fishlore

It looks like ammonia burns.

Can you please tell me if the tank is cycled, the tankmates, and water parameters?

 

I don’t check my waters. I empty 20% every 2-3 weeks and clean filters. There are 2 mollies, 4 guppies and 1 pleco. I have had this tank operational for about 10 months.

There was a baby fish in the tank a few days ago but not sure if it was from this fish or another. Never noticed any other babies or a fish that even looked prego

 

I don’t check my waters. I empty 20% every 2-3 weeks and clean filters. There are 2 mollies, 4 guppies and 1 pleco. I have had this tank operational for about 10 months.

There was a baby fish in the tank a few days ago but not sure if it was from this fish or another. Never noticed any other babies or a fish that even looked prego

What size tank?

How do you clean your filter?

 

It’s a 10 gallon tank; we rinse filters in reverse osmosis water, replace as needed with rinsing in reverse osmosis as well

 

It’s a 10 gallon tank; we rinse filters in reverse osmosis water, replace as needed with rinsing in reverse osmosis as well

I've found your problem! Well a few problems.

One, you've got some major stocking issues and all those fish are producing too much waste (ammonia) and your filter can't keep up. Two, for your stock you need to be doing more water changes. 3, whenever you rinse your filter like that, it kills all the good bacteria so now the dangerous ammonia (from fish waste) cannot convert into something less harmful. So all the ammonia is in the water and hurting your fish. Here's what I suggest you do:

Please click on the blue words (if it works, sometimes it glitches) Nitrogen Cycle . Go to the pet store and get a bottle of Seachem Prime (this deoxifies up to 1ppm of ammonia and nitrite), Tetra SafeStart PLUS (a bacterial starter) and the API Master Test kit. I know it is pricy but is it so worth it, trust me. Then we can go from there