Help sexing red terror

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anzo1993

Potamotrygon
MFK Member
Jun 25, 2016
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Canada
Hello , I have 4 red terrors growing out in a 90 gallon, one of them is bigger than the rest about 3 inches and starting to get some colour, wondering if someone can help me sex the red terror?

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The spangles in the dorsal, caudal, and anal fins are usually male traits.
To to sure, it'd be best to see the front of the dorsal in more of an erect position.
I’ll try and get a better pic
 
So here’s an updated pic of the little guy, the biggest of the group about 3 .5 inches

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Looks male
 
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