I have a red tail gourami about 45cm now,still growing in a 3ft tank. I had seemed a 60 cm long,estimate about 1.5kg gourami in Malaysia,wild caught and keep in a man make pond.
The gourami will usually grow in ratio to your tank size,the bigger the tank,the bigger the fish.
I am planning to house it in my new house with a 4 ft tank.
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