Tropical Fish Keeping - Aquarium fish care and resources

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Gemmylou 12-31-2008 04:55 AM

male guppies or are they?
Hi i just bought five male guppies yesterday unfortuately one didnt make it through the night :( They are all really brightly coloured bar from one who is silvery with irredescent blue flashes on his tail is this really a female or a male?

Oldman47 12-31-2008 07:53 PM

Gemmylou, welcome to the wonderful world of livebearers. Many of the most common livebearers are easy to distinguish based on their anal fin shape. There is an example here of a pair of mollies

And there is an example here of 2 heterandria formosa

In both cases the anal fin shape is the distinguishing feature.

fishman09 12-31-2008 10:40 PM

look at the anal fin, that is the only way yo will know for sure

Cody 12-31-2008 10:54 PM

Wait, guppies?

There is no distinction between colors in a male that says he is a female; they come in a variety of colors. Males generally have longer tail fins. The anal fin can also be a distinction.

fishman09 01-03-2009 07:58 PM

also, the male is most pften more corlorful

Little-Fizz 01-04-2009 10:47 AM

I notice with all my guppies that males have coloured bodies and females only have paterns on their tails. But as stated the only way to know for sure is the Gonopodium.

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