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How do you sex Electric Yellows?


Tiden

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How do you know for certain if you have a female?

If a yellow has a little black in the pectoral? and anal fins can it still be a female? i'm pretty sure i have a male cause his black is very bold in the dorsal and other fins.

It's just that a couple of the other yellows display to one another and go around in circles with the bottom of there mouths sticking out.

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Both sexes of this species are similarly coloured. A dominant adult male is very easy to identify. Apart from the yellow colouration being more intense than his sub-ordinates, the jet-black anal and ventral fins contrast beautifully against its golden body. The black dorsal is edged with yellow. As the fish ages, it can develop a blackish facemask, which continues along the belly. Often male fish can exhibit a brownish patch between the eye and mouth. Some people have suggested that only the males possess a back bar through the eye, although I have found this to be unreliable. Subdominant males are harder to sex because the black pigment is less pronounced, thus making it difficult to tell them apart from females. Females tend to have yellow in place of any black on the anal and ventral fins. Fully-grown females are smaller than males of equal age.

Its why I have a colony of 20, they are so hard to sex. I have females that a fair bit of black in there fins. I guess you will have to wait & see.

Frenchy :D

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