Silver aro. I have gotten them to 18 inches plus in a year. Ck usually around 12 inches.
Side note, both south american red tail catfish and redline snakeheads surpass that by a long shot. Got both to over 24 inches in less than a year. I wish we could still keep snakeheads in the states. Maybe I need to just move to asia, canada is too cold and I dont want to starting ending my sentences with "ay"
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