Platinum White Betta with injured fins?

[hurrumph]

Hi guys,

My platinum white HMPK betta has developed some pinkish lines in it's fins (looks like exploded blood vessels).
It's been there for about 3 weeks and doesn't seem to be improving.
I've tried putting aquarium salt and ketapang leaves but to no avail.

Fish is actively swimming and creating bubble nest but it's the fins that are really bothersome.

Recently noticed this in another female after breeding so I'm wondering what could fix this.

Thanks!

[hurrumph]

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Here's what he looks lke with clean fins.

[hurrumph]

Here's the fish after the pink fins problem.

Male
12146560393_b16949c2af_o.jpg

Female
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[KilliNewbie]

Mine gets it too after a certain age

Sent from my HTC Desire 601 using Tapatalk

[hurrumph]

i'm not sure if it's old age or if it's a disease / injury.

[hurrumph]

Just an update to the situation.
The fish bred successfully with the female and the spawn turned out to be a mixture of a full white + white with red.
This is baffling.