What is wrong with my poor Cory? Twirling & dropping to bottom

Davidh9054

I have a green Cory that is swimming weird. It’s swimming like twirling and drops down to the gravel and goes almost like on its side. It kind of like dive bombs from the top.

 

MacZ

More like a neurological issue. Please use the emergency template.

But to be honest, I don't see much chances that this is fixable. Be prepared to lose this one.
 

Davidh9054

Tank
What is the water volume of the tank?
20 gallon high

How long has the tank been running?
A little over a year

Does it have a filter?
1 aqua-tech 20 and an aqua clear 50

Does it have a heater?
Has an Oase 50w

What is the water temperature?
78

What is the entire stocking of this tank? (Please list all fish and inverts.)
12 harlequin rasboras, 6 albino corys, 6 green corys, 1 blue dwarf gourami, 1 lemon bristlenose, 1 farlowella, 1 mystery snail.

Maintenance
How often do you change the water?
Once a week

How much of the water do you change?
50%

What do you use to treat your water?
Api stress coat

Do you vacuum the substrate or just the water?
Yes every water change

*Parameters - Very Important
Did you cycle your tank before adding fish?
What do you use to test the water?
What are your parameters? We need to know the exact numbers, not just “fine” or “safe”.
Ammonia:0
Nitrite:0
Nitrate:20
pH:6.8

Feeding
How often do you feed your fish?
In the afternoon flake or micro pellets
In the evening at lights out bottom feeder pellets

How much do you feed your fish?
What they can eat in 2 minutes

What brand of food do you feed your fish?
Omega one flake and super color pellets
Hikari micro pellets
Bug bites sprilina flakes
Bug bites algae pellets
Wardley shrimp pellets

Do you feed frozen?
Once a week omega one blood worms and BBS

Do you feed freeze-dried foods?
No

Illness & Symptoms
How long have you had this fish?
About 6-7 months I think

How long ago did you first notice these symptoms?
10/18

In a few words, can you explain the symptoms?
Swimming weird like twirling and laying on its side

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?
It still eats normal but has a slight bulge on its belly

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)
It might be a swim bladder issue.
Would that be curable if it is?


More like a neurological issue. Please use the emergency template.

But to be honest, I don't see much chances that this is fixable. Be prepared to lose this one.
So would the other green corys I got with this same one have the same issue? I would assume if they are from the same batch they might have the same issues.
 

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