regani and coloring

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Not so much a matter of size but age when sexing dwarfs i'd say once it get to around the 1 year mark you could sex it
 
I've seen 1" regani that you can sex, though having not bred them I'm not sure only many weeks it is the females get the spots in the dorsal fin. It happens early though, odds are if they are old enough to be purchased, they should have the dorsal markings.
 
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