So I went to feed Caroline and found 2 huge scratches on her gills! Please help I don't know what they are from! I attached 2 pictures, one of Caroline and one of her tank in case there is something in it that scratched her.
What size is your tank? 3 gallons
What temperature is your tank? 80 Fahrenheit
Does your tank have a filter? Yes, one that came with the tank
Does your tank have an air stone or other type of aeration? I am not sure what that is so I am guessing no.
Is your tank heated? Yes