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62 Posts
Discussion Starter · #1 ·
Theodore's fins look like they've been ripped or he's been biting at them. I don't know if it's fin rot or something else.... He is still very happy and very active, and never misses any meals. There is no discoloration, but it just doesn't seem normal to me. He is a VT and his fins are almost making him look like a crowntail. :|


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62 Posts
Discussion Starter · #3 ·
Alright, adding the following information....

What size is your tank? 2.5 gallons
What temperature is your tank? 78-80 degrees
Does your tank have a filter? Yes
Does your tank have an air stone or other type of aeration? No
Is your tank heated? Yes
What tank mates does your betta fish live with? None

What type of food do you feed your betta fish? Aqueon betta pellets
How often do you feed your betta fish? Once in the morning, 3 pellets

How often do you perform a water change? 2x a week
What percentage of the water do you change when you perform a water change? 50-75%
What type of additives do you add to the water when you perform a water change? Top fin dechlorinater.

Water Parameters:
Have you tested your water? If so, what are the following parameters?
Haven't tested it lately :oops:


Symptoms and Treatment
How has your betta fish's appearance changed? The edges of his fins look ripped
How has your betta fish's behavior changed? No
When did you start noticing the symptoms? A couple days ago
Have you started treating your fish? If so, how? No
Does your fish have any history of being ill? No
How old is your fish (approximately)? No idea, I've only had him a couple weeks. He came from PetSmart but he looks full grown. I'm terrible with size but he's probably 2 1/2 to 3 inches

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11,190 Posts
Most likely it is the filter-often with the delicate long fin males the filter itself can be the cause of fin damage.

IMO/E-filters are optional for this species-what I would do is remove the filter and just make the twice weekly water changes-1-50% and 1-100% weekly

Improve nutrition by feeding good quality varied diet in small frequent meals and if you have access to mosquito larva offer several rinsed a couple of times a day to boost protein intake

Add some tannins-either IAL or dried oak leaf to help toughen his fins/scale and in a month-try the filter again on the lowest flow setting or baffled- if you want to use the filter that is.....

Sometimes, especially with new Bettas from pet shops you need to improve nutrition and toughen fins/scale for a month or so-sometimes that will help their fins tolerate the water flow better.....

Right now you need to stop further damage and prevent a secondary infection-fresh clean dechlorinated tannin stained water from water changes, no water movement and improved nutrition is usually all that is needed...

Lovely fella by the way....good luck and keep us posted....

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62 Posts
Discussion Starter · #5 ·
Thank you for your advice! :) I did baffle the filter today, but I'm going to do as you suggested and just take it out. I change his water a lot anyway, so I may as well just switch it to a 100% change :) When I do this, should I be rinsing the gravel/plants as well? I've read conflicting things on this, as you don't want to remove the good bacteria, but you do want to get rid of the poop/nasties?

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218 Posts
From what I understand, you only have to worry about the good bacteria when your tank is cycled. Tanks under 5 gallons can't maintain a cycle very well due to lack of surface area. That, and having to do 100% water changes will keep the tank from cycleing as well.
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