I just purchased 3 neon tetras yesterday, and when I woke up this morning one was already dead.
It was a white color when I fished it out of the tank to get rid of.
Now I am questioning if my other two neon tetras that are left are healthy or not.
Their swimming to me looks not normal, they are facing a 45 degree angle toward the bottom of the tank and making almost jerking like movements towards the bottom for a short period.
They like move a little wait move a little wait...etc.
Is this behavior normal, or are my neon tetras sick?
They are in a tank with a dwarf gourami, a platy and 3 rasboras...
Thank you for your help in advance and please hurry. If they are sick, I want to remove them as soon as possible.