You and your friend need to go into business together, you are both growing your barra's 50% faster than most aquaculture companies. These companies provide ideal conditions to rear fingerlings.... feeding high protein pellets that are specifically designed for barra 4 times a day.
http://www.pir.sa.gov.au/__data/assets/pdf_file/0004/33970/barra.pdf
"Under the optimal conditions, barramundi are able to grow from 30 mm (0.5 grams) to 300 mm
(375 grams) in five months."
http://www.nativefish.asn.au/barramundi.html
Growth rate is variable, but generally rapid. Typical overall lengths at the end of each year are as follows:
Year Length range (mm)
1 310-330
2 430-500
3 529-610
4 610-690
5 730-770
6 810+
I think the chart above is a little on the slow side
BUT
45cm/18in in 5 months.....9cm/3.6in per month.....3mm/.12in per day! is crazy growth in anyones language!
Arapima barely grow at that pace...[/qoute]
ive onl been keeping for 11mnths and ive had my barra fer 5mnths i bought him at 5cm and he is now 43cm long along with the other one that was 10cm and is now the same size so get your facts straight mate!