Form Breeding

[MrVampire181]

Well that's different. You would only need one generation to get big ears.

[Crowntailed]

SO your saying there are no pros or cons to breeding a ee to a ee?

[Sena Hansler]

I think it would depend on the parents, and their parents... if you get a petsmart one, you may end up with the opposite of what you want

[indjo]

Anything recessive bred to the same recessive trait should produce mostly that recessive trait. Theoretically it should produce 100% but in reality, it will only be a majority - depending on their actual genetic background.

But it may take at least 3 generations to produce a recessive trait when crossed to a dominant trait. The punnet square for big ear would look something like this:

EE = regular ear/pectoral
ee = big ear

(F0) Regular x Big ear = 100% big ear geno
Parents ---- E ------ E
e ----------- Ee ---- Ee
e ----------- Ee ---- Ee

Note : They should look 100% regular, but IME bettas genetics is far from simple so they will show some rather big ears.
....................................

(F1) geno x geno
P --------- E --------- e
E --------- EE -------- Ee
e --------- Ee -------- ee
25% regular, 50% geno, 25% big ear
.......................................

(F2) Big ear x big ear = 100% big ear (F3)
p ---------- e --------- e
e ---------- ee -------- ee
e ---------- ee -------- ee

*** I need to emphasize that this is theoretical. To my experience betta genetics is far more complicated due to constant mix breeding and possible mutations.

[vette91]

All this has to do with the caudal fin, but does any of you have any information on the dorsal fin? I know many people believe that the dorsal fin is one piece of the betta that has been ignored but has a lot to improve on.


and also, thanks for this thread its very very helpful.

Also, to indjo, mrvampire and kadenjames, do you mind if i print some of the information out that you wrote down?

[indjo]

I'm sure everyone, like myself, wouldn't mind our info printed.

To improve dorsal you would have to cross to a DT - look for a DT that has a long front ray, not the ones that has 2-3 tiny front rays. And one with an up right dorsal. Remember to focus on dorsal for further breeding because they are harder to maintain - though you've achieved the desired dorsal, if not bred correctly, it will return to a regular form.

[Fabian]

How about a male pk to a female ct.Note:the male is not a hmpk.

[VictorP]

You would get long finned ct or combtail with pk geno

[JikoJiko]

Sorry to intervene on this. Though I am trying to extend on the the what if questions. Male PK x Female HMPK.

I was thinking that most of the offspring's might come out looking HMPK more so than PK genes. True or not? Any tips?

Thanks :)

[KadenJames]

The difference between "PK" and "HMPK" is the 180 degree spread (halfmoon shape) of the caudal. PK x HMPK will give you PK, as you are reducing the amount of branching by crossing to a non-halfmoon PK. Sometimes, even HMPK x HMPK will give you PK, because some of the traits (adequate branching & webbing) can be recessive and may not give the offspring the proper spread.