Predatory Fish for Amazon/South American Themed tank?

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Fanatic_Fish_Lunatic

Plecostomus
MFK Member
Jul 24, 2024
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Can you guys give me some recommendations for predatory fish from SA/Amazon? The tank is 800 gallons in total, currently have an oscar, a monoculus peacock bass and a silver arowana in the tank.
 
Boullengerella maculata aka spotted Pike characin looks great but might be a bit small with an arowana in the tank, personally i love the (gymnotus) knifefish. Some species get big too
 
My Festae were all about that size when I bought them.
I've never seen any adults for sale locally.
 
Boullengerella maculata aka spotted Pike characin looks great but might be a bit small with an arowana in the tank, personally i love the (gymnotus) knifefish. Some species get big too
Do you think 30 cm fish can be eaten by a full grown silver arowana? Maybe, maybe not. Depends on the arowana's personality, I guessed.
 
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