Two Arowanas Together in Aquarium? Multiple Aros. http://arowana-fish.org/
These are huge fish and you need to have adequate space for them to live. A minimum of 300 gallons of aquarium is needed. It may seem like a lot of fish aquarium but it is also a lot of fish and size because these fish can grow up to 30+ inches in size. Don't get me wrong a lot of people push the limits as far as stuffing fish into smaller aquariums but that doesn't make it okay to do so. I'm a big believer in treating these fish properly and giving them enough space to have a happy life because they are animals to a niche and be forgotten.
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Penguin 200 is also a good filter
Tags: Two Arowanas Together in Aquarium? Multiple Aros, Arowana, Aquarium, Fish