Behavior
Asian arowanas are paternal mouthbrooders. They are slow to reach sexual maturity and difficult to breed in captivity; successful spawnings typically take place in large outdoor ponds rather than in aquaria.
Two breeders reported success using a garden pond measuring 18 feet (5.5 m) by 18 feet (5.5 m) by 3.5 feet (1.1 m) deep, with pH maintained between 6.5 and 7.0. The fish were over five years old. The successful harvest took place after the third spawning; in the first two spawnings, the male swallowed the eggs, possibly due to improper water quality.
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