What genetics causes fins like this (see picture) ?

So my male angels has a very distinct split fin (I believe it is natural and not a tear). The female has more conventional fins and all the off springs (8) i kept have fins like the female so i presume it is recessive (or maybe it is sexual?).

Specifically i'm asking about the double dorsal fin he has:



Anyway I'd like to fine a platinum angel with fins like his.

Btw bizaliz3 this is the male and he wouldn't open his fins all the way before.

 

If that is indeed genetic, looks pretty awesome if you ask me!

 

My guess is he suffered some trauma while growing, the same thing happened to one of my angels and it never grew that part of its fin back. If it’s genetic then that’d be very interesting.

 

The picture isn't great because the top portion opens a bit more than he has it shown also it doesn't have the same pattern as the lower part (it is completely jet black). It could be trama as you said but there is a real gap. He was pretty small when i got him - sub quarter size and he was a 'stray' the shop had (someone abandoned him by himself - no siblings). Oh well kind of hopeful it is genetic. He is opening his fins now because he is guarding wrigglers so it is his 'aggressive' mode - normally he keeps them clamped unlike the female who never clamps her.

My guess is he suffered some trauma while growing, the same thing happened to one of my angels and it never grew that part of its fin back. If it’s genetic then that’d be very interesting.

 

The picture isn't great because the top portion opens a bit more than he has it shown also it doesn't have the same pattern as the lower part (it is completely jet black). It could be trama as you said but there is a real gap. He was pretty small when i got him - sub quarter size and he was a 'stray' the shop had (someone abandoned him by himself - no siblings). Oh well kind of hopeful it is genetic. He is opening his fins now because he is guarding wrigglers so it is his 'aggressive' mode - normally he keeps them clamped unlike the female who never clamps her.

Not sure if you plan on raising the wrigglers but if you do that might help prove if it’s genetic or not. I know in the previous spawn none of them had this split fin, but it’s possible it was just an unlucky spawn. If you don’t see any double fins in this spawn then my guess is it was trauma.

 

I have 8 off springs in the tank - so i won't be raising these - no more tank space. So far none of the off springs are showing this trait but they all look like the female with regards to fins. I never really noticed that split before because as i said most of the time he hides it. I have pictures from when he was younger but in nearly all of the ones i've found he keep his fins clamped.

Not sure if you plan on raising the wrigglers but if you do that might help prove if it’s genetic or not. I know in the previous spawn none of them had this split fin, but it’s possible it was just an unlucky spawn. If you don’t see any double fins in this spawn then my guess is it was trauma.

 

Ooh this is cool. I don’t know much about angel genetics, but imma keep an eye on this thread.

 

As cool as it would be to find this to be a genetic thing, it is unfortunately not.

Its just a split fin. Which typically heals pretty quickly. Like in a matter of days with pristine water.

And sometimes it never heals. But its not a genetic thing. I also do not believe he was born with it either (meaning not a birth defect). I believe it probably happened when he was young and never healed.