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Discussion Starter · #1 · (Edited)
Hi- my betta developed discolored scales several months ago on the left gill plate. Since then they started to grow and looks like a lump. I had put him on aquarium salt and sulfaplex but stopped as it did nothing. He is eating well, but recently is only active at meal time resting/sleeping at the surface the rest barely moving. I suspect a tumor. He is a koi betta and has marble gene. I think somewhere I read, marbles were more prone to tumors and not much you can really do as its bad genetics. Anyone have any experience with tumors?

How many gallons is your tank? 5 gallon
Does it have a filter? yes
Does it have a heater? no, I live in the tropics
What temperature is your tank? 82-84F
Does your tank have an air stone or other type of aeration? No
Does your Betta have tank mates? What kind? No tankmates

What food brand do you use? Ahm betta pellets,
Do you feed flakes or pellets? pellets
Freeze-dried? no
How often do you feed your Betta? How much? twice a day about 6-7 micro pellets. frozen brine and blood worms 2x a week each

your Betta became ill how often did you perform a water change? Once per week
What percentage of water did you change? 25-30%
What is the source of your water? tap water declorinated with prime
Do you vacuum the substrate or just dip out water? vacuum
What additives do you use other than conditioner? What brand of conditioner? Prime and sometimes flourish for the plants

Water Parameters:
What are your water parameters? Please give exact numbers. If tested by pet store please get exact numbers. "Fine" or "Safe" won't help us help you. Important: Test your water before the regular water change; not after one.

Ammonia: 0
Nitrate: 5
pH: 7.6
Hardness (GH): na
Alkalinity (KH): na

Symptoms and Treatment:
When did you first notice the symptoms? A few months ago
How has your Betta’s appearance changed? started as discolored scales but lump started to grow
How has your Betta’s behavior changed? Eats well and active at feeding time but lately just sits at top during day. Used to be more active during the day
Is your Betta still eating? Yes
Have you started treating your Betta? If so, how? Salt and Sulfaplex
Does your Betta have any history of being ill? No
How long have you owned your Betta? 11 months
Was he or she ill or suffering some sort of damage when purchased? No


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