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I went away for three days and when I got home I found 2 dead bettas in the tank, and the rest are clinging to the surface with their breathing seemingly laboured. They swim upright but seem weak and lethargic. They show varying degrees of symptoms. I don't know what's wrong with them. None of their tankmates are affected.
Housing
What size is your tank? - 26 gal
What temperature is your tank? - 83
Does your tank have a filter? - y
Does your tank have an air stone or other type of aeration? - y
Is your tank heated? - y
What tank mates does your betta fish live with? - 5 corys and 5 White cloud minnows. None of them are showing any sign of illness.
Food
What type of food do you feed your betta fish? - Varies. Mainly Hikari betta pellets mixed with Wardley's shrimp pellets (for the corys) or nutra fin betta flakes. Occasional frozen brine shrimp
How often do you feed your betta fish? - twice a day
Maintenance
How often do you perform a water change? - at least once a week
What percentage of the water do you change when you perform a water change? - 1/3 to 50%
What type of additives do you add to the water when you perform a water change? - Prime, IAL
Water Parameters:
Have you tested your water? If so, what are the following parameters?
Ammonia: .25
Nitrite: 0
Nitrate: n/a
pH: 8.4
Hardness: n/a
Alkalinity: n/a
Symptoms and Treatment
How has your betta fish's appearance changed? - Seem bloated but no pineconing. They have torn fins from picking on each other and I wonder if some or all have fin rot?
How has your betta fish's behavior changed? - lethargic, laboured breathing, either sitting on bottom or hanging near surface, no fin clamping
When did you start noticing the symptoms? - last night when I got home after being away
Have you started treating your fish? If so, how? - 2 sickest looking fish quarantined for observation with aq salt and IAL. Main tank: aq salt added along with IAL
Does your fish have any history of being ill? - Unknown, all purchased from Petsmart within the past month
How old is your fish (approximately)? - Varied ages, based on sizes
Housing
What size is your tank? - 26 gal
What temperature is your tank? - 83
Does your tank have a filter? - y
Does your tank have an air stone or other type of aeration? - y
Is your tank heated? - y
What tank mates does your betta fish live with? - 5 corys and 5 White cloud minnows. None of them are showing any sign of illness.
Food
What type of food do you feed your betta fish? - Varies. Mainly Hikari betta pellets mixed with Wardley's shrimp pellets (for the corys) or nutra fin betta flakes. Occasional frozen brine shrimp
How often do you feed your betta fish? - twice a day
Maintenance
How often do you perform a water change? - at least once a week
What percentage of the water do you change when you perform a water change? - 1/3 to 50%
What type of additives do you add to the water when you perform a water change? - Prime, IAL
Water Parameters:
Have you tested your water? If so, what are the following parameters?
Ammonia: .25
Nitrite: 0
Nitrate: n/a
pH: 8.4
Hardness: n/a
Alkalinity: n/a
Symptoms and Treatment
How has your betta fish's appearance changed? - Seem bloated but no pineconing. They have torn fins from picking on each other and I wonder if some or all have fin rot?
How has your betta fish's behavior changed? - lethargic, laboured breathing, either sitting on bottom or hanging near surface, no fin clamping
When did you start noticing the symptoms? - last night when I got home after being away
Have you started treating your fish? If so, how? - 2 sickest looking fish quarantined for observation with aq salt and IAL. Main tank: aq salt added along with IAL
Does your fish have any history of being ill? - Unknown, all purchased from Petsmart within the past month
How old is your fish (approximately)? - Varied ages, based on sizes