Sounds more like female to me. Mine would change colors too, showing white lines on her sides and black marks under the eyes. We called it her warrior stripes because she would chase off everyone when she was getting ready to lay eggs. Try looking under its belly for an ovipositor.What is bearding,,it changes colour a lot sometimes there is white lines on both sides of that black mark
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I got lucky having a male fish (blood parrot) to compare it to. Also she laid eggs and would guard them all day and flare at anyone who got close to the tank, so I knew for sure.Ovipositor????
How to identify from it