I have 2 red devil , and this 2 never fight , I have the smaller one first 20cm and recently I got the bigger one 23cm. The big one will try to kill all others fish no matter big or small if I added them to same tank but he don't fight with this red devil
Been told that small one is female and bigger one is male, see pic, with their vent picptoo.
Try to breed them but nothing happened , never see the female lay eggs too.

Been told that small one is female and bigger one is male, see pic, with their vent picptoo.
Try to breed them but nothing happened , never see the female lay eggs too.

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