Originally Posted by Malawi Freak
It's really rough to say. Many factors come into play like water quality, how much the fish is actually eating, and most importantly - temperament of the tank. I have a red zebra that is about 5" and grew to 4" in about 3 months. He outgrew everyone in the tank and I have many fish in the tank that have maybe grown 1/2" in the past year.
Would also like to add that increasing temperature boosts metabolism and growth, however it boosts activity as well. Which may or may not result in aggression.
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