Long overdue update, had tested them in 3 different spaces:
1. Packed 10x5x2 pond (less feed)
2. Packed 4x2x2 tank (frequent feed)
3. Spacious 15x10x5 pond (less feed)
Number 1, the giants aren't growing well. They eat less too, most stuck at 12". Number 2, hasn't had much growth at all, only 13"-13.5" even with frequent feed. Number 3, was cleaning the pond had to relocate the fishes, pull this guy out. 15" currently. He put 10" in nearly 5 months. I can see why in 6 years this fish can grow to 150-200kg. Conclusion, space are more important than feeding frequency.
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