Join Date: Jun 2010
Location: Jakarta, Indonesia
The problem with giant's growth is that it is highly dependent on gebetic, water space and parameters, plus food.
Good genetics but raised in small 1g tank, will stunt growth. Good genetics, not fed enough will cause poor growth and will not grow to its full potential.
Another problem is; not all will carry full giant genetic combo. Many will lack needed genes and cannot grow. However they will have the appetite and quickly reach 4-5 cm but then suddenly stop growing . . . . This is why most breeders will not guarantee full giant growth. Most of them don't exactly know which individual will grow as full, big giants. . . . Not because they are deliberately mislabelling their stock.
When buying giants, it is best to buy 4 month old with a minimum body size of 5.5cm (minimum size to be considered as giants). If cared for properly, and has good genetics, these can grow (should) to at least 6-7 cm by 7-8 months. But those less than 5.5 cm will mostly grow to only 6cm - if it has good genetics. And those less than 5.5cm might have poor genetics thus won't grow regardless of water and food. . . . .
Many great breeder/expert have dificulty growing this type to its full potential . . . . Usually those dedicated to breeding giants are more successful.
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Note: good genetics + ideal water and food can grow to 4cm in 2 months and 6cm in 4 months.
Bad genetics can grow to 3cm in 2 months but will practically stop at 4cm, after the third month.