has my betta got fin rot?

He looks OK to me.

Fin rot - look for darkened, black, or "smudged" appearing edges.
Fin biting - look for U-shaped chunks missing from the fins, with no discoloration.

Can you fill out the form below so that we have more information? Answer what you can, and leave anything else blank.

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Housing
What size is your tank?
What temperature is your tank?
Does your tank have a filter?
Does your tank have an air stone or other type of aeration?
Is your tank heated?
What tank mates does your betta fish live with?

Food
What type of food do you feed your betta fish?
What BRAND of food do you feed it?
How often do you feed your betta fish?
How MUCH do you give at each feeding?

Maintenance
How often do you perform a water change?
What percentage of the water do you change when you perform a water change?
What type of additives do you add to the water when you perform a water change?

Water Parameters:
Have you tested your water? If so, what are the following parameters?
Ammonia:
Nitrite:
Nitrate:
pH:
Hardness:
Alkalinity:

Symptoms and Treatment
How has your betta fish's appearance changed?
How has your betta fish's behavior changed?
When did you start noticing the symptoms?
Have you started treating your fish? If so, how?
Does your fish have any history of being ill?
How old is your fish - OR - How long have you owned it?

Housing
What size is your tank?
Its 22L

What temperature is your tank?
26c (78f)

Does your tank have a filter?
Yes but he's getting stuck to the intake so Ive turned it off just now until i get a spray bar.

Does your tank have an air stone or other type of aeration?
yes it has a bubble wall

Is your tank heated?
yes

What tank mates does your betta fish live with?
he used to live with 5 glow light tetras but they kept nipping him so i took them out but now he lives with two galaxy rasboras and they get on great

Food
What type of food do you feed your betta fish?
food flake and like once a week id give them a treat of a freeze dried blood worm or brine shrimp

What BRAND of food do you feed it?
flake food is king british and the two other are firstbite

How often do you feed your betta fish?
twice a little bit in the morning and then a little more at night time

How MUCH do you give at each feeding?
a pinch not that much

Maintenance

How often do you perform a water change?
cause the filter is off at the moment i do a change of 25% every other day but if i had my filter on weekly

What percentage of the water do you change when you perform a water change?
25%

What type of additives do you add to the water when you perform a water change?
API quick start and ATM paradigm

Water Parameters: my step dad does all that so i don't know but the water is fine
Have you tested your water? If so, what are the following parameters?
Ammonia:
Nitrite:
Nitrate:
pH:
Hardness:
Alkalinity:

Symptoms and Treatment
How has your betta fish's appearance changed? when i got him yesterday his fins looked a bit ragged

How has your betta fish's behavior changed? nope he keeps him self to him self

When did you start noticing the symptoms? yesterday

Have you started treating your fish? If so, how?
nope i havent

Does your fish have any history of being ill? i don't think so
How old is your fish - OR - How long have you owned it? own the fish for two days