I think it’s a delta betta. Not sure if it’s colour. Can you post a picture of it flaring? It could be a half moon betta if it’s casual fin is 189degree when flaring.

 

For sure they are halfmoon, they just started flaring and will be separated tomorrow or the day after. Will try and take a pic though just in case. I was more curious on what color type this would be considered as both parents are galaxy koi and carry the marble gene. So the offspring coloring isn’t what I expected.

 

They are only 8 weeks old?!! They're incredibly big and colorful for that age!! Not sure for the colors, but my halfmoon's colors were identical!

 

Aww thank you! I put a lot of research and work into raising them. I’ve been told bicolored but I think maybe butterfly?

At least they got some red in them lol, that marble gene is so unpredictable. I would consider them
bi-colored. You have a few choices if you’d like to move forward with this line, you can breed back a baby to dad or mom or you can breed the two best FORMED siblings and likely they will throw some koi in the second generation. Either way they are very good looking fish well done 👍🏻

yeah, I have a female that looks super promising I think I will pair to dad. I have to wait for her to grow out to know for certain.

 

At least they got some red in them lol, that marble gene is so unpredictable. I would consider them
bi-colored. You have a few choices if you’d like to move forward with this line, you can breed back a baby to dad or mom or you can breed the two best FORMED siblings and likely they will throw some koi in the second generation. Either way they are very good looking fish well done 👍🏻

 

At least they got some red in them lol, that marble gene is so unpredictable. I would consider them
bi-colored. You have a few choices if you’d like to move forward with this line, you can breed back a baby to dad or mom or you can breed the two best FORMED siblings and likely they will throw some koi in the second generation. Either way they are very good looking fish well done 👍🏻

I just updated! All my babies ended up being koi! Except for one blue marble short finned male. (Plakat hm). He’s the black sheep of the group lol.
Was wondering if the male I posted I should use next in my line. He’s showing some orange spots, and I would like to have a little more orange. But he has purple iridescence and I don’t know if that’s a fault, couldn’t find anything on the IBC standards about it.

 

Some of them will probably still change patterns and colors around as well, the ones with lighter faces could lose color pigment completely or get darker faces it’s just to hard to say with any certainty but that’s what I like about marbles.

 

Bi-color Butterfly has 50/50 color distribution on all non-paired fins. Tri-color have 33/33/33 color distribution on non-paired fins.

Both are quite lovely no matter their pattern. And so healthy!

 

You seem to know a lot more than I do, upon further examination of my male and female they seem to have a slight gap in their webbing, it’s only noticeable when flaring. And it makes me believe that they had a crown tail in their ancestry. As more than half my babies also have this gap in their webbing more prominent on the males. I think they are half sun? It’s most noticeable on the dorsal fin.
Also what pattern do you think?

 

I have read the IBC Judging Guidelines until my eyes crossed. Lots of illustrations and exact explanation. I'd find a photo and compare what I saw to what the guidelines describe. Still have trouble with ray branching, though.

https://www.ibcbettas.org/upcoming-shows/standards/

I also trust and listen to indjo. He's been a breeder for decades.

 

Great job on raising them. They are amazingly developed for 8 weeks.

I'd say they are blue red bicolors. Since they're from a marble spawn, they may change color/pattern.

I’ve never seen the spots like that on a koi betta before, any idea what color branch he would fall into??

 

Great job on raising them. They are amazingly developed for 8 weeks.

I'd say they are blue red bicolors. Since they're from a marble spawn, they may change color/pattern.

 

Thank you!! Thank you for identifying the color for me too!!!

 

Just wanted to update y’all! My babies have started to show marbling!!! I’m very excited!

 

It's been a long time since I last read the IBC color classes. Please don't take my word for it and research more.

I believe there is a multi color class. However in those days multi color mainly meant a betta had several colors, all with distinct borders and form a certain pattern.

I think koi falls under multi color, similar basic criteria (distinct borders - no bleeding) and both sides of the body must show similar pattern. However, I do not know what colors are allowed or faulted.

Again, it's been a while since I last followed IBC color criteria. And I have never really read up on marbles.