guppy fish male/female

Question
Do you have pictures of female and male guppies? In the picture can you show me how or where to tell if my guppies are male or female?

Answer
Hi Jared,
 Unfortunately I don't have any photos I can send you, however, the difference is actually easy to spot.  In the male, the fin on the bottom rear portion of the body (the anal fin) is highly modified. Instead of looking like a fin, it looks like a movable tube, which in fact it is. It is called a gonopodium and is used for transfering sperm from the male to the female -- these species are internally fertilizing and livebearers.  The female has a "normal" looking fin.  Also, in general, females are much larger and more robust than males.

-- Ron
  rcoleman@cichlidresearch.com
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