Young 10cm-12cm arowana fin black

ard22

Feeder Fish
MFK Member
Nov 9, 2024
10
1
3
32
Can I ask a question here ? About my young arowanas ?
Question is
I have young arowanas the tail fin is not frayed but it is black colour on maybe 3 of them. Had them in the new tank for 2 weeks or so now
They came from a holding tank and not to sure if they had it from their or since been put into the new tank I did notice it a day after.

Is this normal ? Or is this early stages of fin rot?

Holding tank not looked after by me, has had some fights in the holding tank with the arowanas that I've been notified of aswell.

Since in new tank blackness or damages have not gotten worse.
Size 10-13cm
Tank size 1.5k - 2k litres (circle tank)
Parameters ammonia 0 nitrite 0 nitrate 5-20ppm since start.
Temp 27 degrees Celsius
 

ard22

Feeder Fish
MFK Member
Nov 9, 2024
10
1
3
32
Yes.



No idea unless you post some pictures.

What types of aro are they? Some smaller golden aros have black fringes around their fins. It is a good sign. No way of knowing, we really need to see your fish.
Oh thought I sent a video and image
 
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