To improve finnage, breeders mix breed giants (originally fighter style)to SQ regulars. It takes time to get them giant size again. And when they do get giant size, then they cross them tp SQ regulars again..... and so on until they get SQ giants. So there are many "giant" that only reach 6cm (2"+) in my country.

But I've heard that TRUE GIANTS .... I mean the actual giants, can grow 2.5" in 2-3 months. (I missed the auction a few months ago). So I think the true giants will grow due to genes no matter what. And the half giant(?) or the "fake" giants won't.

That's about the size of a big fighter.
That don't seem right.
The fry should be close to or bigger then the parent.
Not 2.5cm smaller.

congrats!!!
Mine never went over 5cm.... half giants? IDK - getting rid of them, that's for sure.

I doubt my current fry will grow big. The female was only 4cm. Oh well, at least I like the color - solid royal blue masked.

Yes there mine.
I know what u mean.
Giant tend to get sick easier then there small counter part.
Plus there really lazy when full grown.
But oh will Ive like the giant.
Yeah all sibling still in the same tank.

That's why I wasn't interested in Giants .... my group wasted a lot of money buying from Thailand.... but none grew that big. So I thought it couldn't breed true.
No I haven't seen giants that size either. Only hear stories. But I've seen 8cm/3"+ BO

Were they your fry? If so, you have true giants...... congrats. Keep them in 5g filtered tanks and they should keep growing. Be careful though because it's said that they are more sensitive to diseases when they get older/bigger.

Havent seen one thats 4" Pk giant.
But 3.25" I've have seen a few.

Today I just went to measure them.
The biggest one was 2.75" andThe smallest was 2" at 4 month.

Giant descendants will grow quickly until they're 4cm (almost 2") BO. Then some of them .... if not all..... will suddenly stop growing. Some will grow at a much slower rate and reach 5cm. The true giants should have reached 5.5cm by 4 months. So if by 4 months your fry doesn't reach that size, it will unlikely grow to 4".

So far, even 6cm/+2" BO giant spawn doesn't produce true giants..... making me understand more and more of the difficulty in breeding them.

Seem like it.
But the only thing I can do is wait.
My giant seem like to stop growning.
Or just growing at a very slow rate.
Can't really tell no more.

Your spring and summer is my hot season..... breeding time. LOL
But 2 months seems like 2 centuries....
Still concentrating on my fry .... I haven't had fry grow to be true giants.

I know what u mean.
Warmer water mean less sick fish and more bug to feed.
In about two month it should warm up enough to keep fish inside without a heater.