Mystery Deaths - Red Spot on Emerald Eye Rasbora

[Landon]

I’ve had some deaths (1 Emerald Eye Rasbora, 3 baby Panda Loaches, 1 adult panda loach jumped out) in this tank over the past month and haven’t been able to figure out what’s going on. 
 

I haven’t seen any signs of disease but I do see a red spot on a Rasbora today. It is otherwise acting very normal. Any ideas?
 

Water Parameters:

• pH - 7.2
• Nitrates - 10 ppm
• Hardness - 150 ppm
• Nitrite - 0
• Ammonia - 0
• KH/Buffer - 80 ppm
• Water Temperature - 72-73

• Easy Green - 1 pump 1x day (lots of stem plants)

• canister filter & airstone

• tank is 8 months old

• 22 gallons long tank

Edited April 13 by Landon

[Colu]

On 4/13/2023 at 9:39 PM, Landon said:

I’ve had some deaths (1 Emerald Eye Rasbora, 3 baby Panda Loaches, 1 adult panda loach jumped out) in this tank over the past month and haven’t been able to figure out what’s going on. 
 

I haven’t seen any signs of disease but I do see a red spot on a Rasbora today. It is otherwise acting very normal. Any ideas?
 

Water Parameters:

• pH - 7.2
• Nitrates - 10 ppm
• Hardness - 150 ppm
• Nitrite - 0
• Ammonia - 0
• KH/Buffer - 80 ppm
• Water Temperature - 72-73

• Easy Green - 1 pump 1x day (lots of stem plants)

• canister filter & airstone

• tank is 8 months old

• 22 gallons long tank

Your water parameters are fine have you added any new fish to the tank recently if so did you quarantine them before adding them to the main tank 

Edited April 13 by Colu

[Landon]

I added the baby panda loaches a few months ago. They were not quarantined beforehand 😔

[Colu]

On 4/14/2023 at 4:12 AM, Landon said:

I added the baby panda loaches a few months ago. They were not quarantined beforehand 😔

When you get odd random deaths every couple of weeks it can be a sign of a parasitic infections with the redding to the lump on your Rasboras I suspect there's a bacterial component what I would do is treat with prazipro once a week for three weeks and  the Rasboras with the red lump what I would do is quarantine if you have another tank and do a course of maracyn2 in food feeding a small amount twice a day for 7 days if it's eating if not eating dose the tank with maracyn2 

Edited April 15 by Colu

[Landon]

This is super helpful! Thank you so much. I really like the idea of the prazipo medicated food, and will try that out asap. 

[Landon]

On 4/14/2023 at 3:24 AM, Colu said:

dose the tank with maracyn2 

I am planning on dosing the tank, but I only have regular maracyn. Can I ask why you suggest maracyn2 instead of regular maracyn? 

[Colu]

On 4/18/2023 at 1:21 AM, Landon said:

am planning on dosing the tank, but I only have regular maracyn. Can I ask why you suggest maracyn2 instead of regular maracyn

Maracyn2 is a more broad spectrum antibiotic treatment predominantly treats gram negative bacterial infections they are more common in fish as you have  maracyn to hand then I would treat with that maracyn2 is a my preferred antibiotic treatment 

Edited April 18 by Colu