Neon Tetra Rapid Breathing

What is the water volume of the tank? 20 gallon long
How long has the tank been running? 2-3 months
Does it have a filter? Yes
Does it have a heater? Yes
What is the water temperature? ~80 (room temp)
What is the entire stocking of this tank? (Please list all fish and inverts.)
5 neon tetra
2 hatchetfish
1 BN pleco
3 sunset thicklip gourami
4 green corys

Maintenance
How often do you change the water? 1-2 weekly
How much of the water do you change? 20-30%
What do you use to treat your water? Topfin water conditioner
Do you vacuum the substrate or just the water?
Both
*Parameters - Very Important
Did you cycle your tank before adding fish? No but my tank is now cycled and stable
What do you use to test the water? Test strips; purchasing master test kit this week
What are your parameters? We need to know the exact numbers, not just “fine” or “safe”.

Ammonia: 0
Nitrite: 0
Nitrate: >10
pH: 7.5

Feeding
How often do you feed your fish? Twice a day
How much do you feed your fish? As much as they can eat in 1-2min
What brand of food do you feed your fish? Flakes, algae wafers, freeze dried bloodworms, sinking carnivore pellets
Do you feed frozen or freeze-dried foods?
Freeze dried
Illness & Symptoms
How long have you had this fish? 3-4 days
How long ago did you first notice these symptoms? Just now
In a few words, can you explain the symptoms? Rapid breathing, loss of color, not moving, not schooling, not eating.
Have you started any treatment for the illness? No
Was your fish physically ill or injured upon purchase? No
How has its behavior and appearance changed, if at all?
Loss in color, not schooling or eating
Explain your emergency situation in detail. (Please give a clear explanation of what is going on, include details from the beginning of the illness leading up to now)
He is hiding behind my plants and did not come out for food. Reacts with other fish around him but doesn't move much. If one of the tetras chase him a little he will go back to the same spot. Rapid breathing and I may see a white spot or 2 on his head. I was thinking neon tetra disease or maybe even ich. I did not quarantine any of my fish.
Video:

Update: He is swimming around but now I can see the white dots. One on his fin and one on his head.

Update #2: Erratic swimming at top of tank

 

Do you have any inverts if not start ich treatment and if you don’t have ich treatment get some start raising temp. My neons had This and starting treatment early is key

 

Do you have any inverts if not start ich treatment and if you don’t have ich treatment get some start raising temp. My neons had This and starting treatment early is key

Sadly the neon has passed away. Should I still raise the temps? Also I have no inverts.

 

Yes and do you have ich meicine

 

I do not. The only “medicine” I have is freshwater aquarium salt. And what temp should I raise it to and for how long?

Yes and do you have ich meicine

 

First, do a large water change (at least 70%) plus siphoning the bottom of the tank to remove the parasite as much as possible.

Then start treating with antI ich medication for 10days to 2 weeks.

Ich is very contagious. Ensure that all other fish are not infected.

What is your tank temperature?