bogglesmum Posted August 15, 2007 Report Share Posted August 15, 2007 Our first lot of baby guppies are about a month old now-and none of them seem to have any colouring. A couple of fry in our second batch (about 2 weeks old) are starting to show patches of black but the rest all look like females at this stage. How long does it take for the colouring to come through? Quote Link to comment Share on other sites More sharing options...
Adrienne Posted August 15, 2007 Report Share Posted August 15, 2007 males colour first, not sure about females, my fry are about 6 weeks and just starting to show yellow and orange on their tails, these are probably males. you may have mostly females. Quote Link to comment Share on other sites More sharing options...
Ianab Posted August 15, 2007 Report Share Posted August 15, 2007 The males generally start to colour when they begin to change shape. 6-8 weeks seems about right. You will see the shape of the males ventral fin change as well, they should start to colour and grow a long tail around that time. Cheers Ian Quote Link to comment Share on other sites More sharing options...
Peter McLeod Posted August 16, 2007 Report Share Posted August 16, 2007 I found different strains developed colour at different ages.I also found I could sex my blue and red strains faily well at 3 weeks while the yellow and snakeskin strains were around 5-6 weeks. Quote Link to comment Share on other sites More sharing options...
Adrienne Posted August 16, 2007 Report Share Posted August 16, 2007 i think that probably the darker colourings show first - mine are yellow hence not a lot of colouring still at 6 weeks. Black/blue & red will probably show earlier. I can't sex mine yet either but should be able to tell soon. Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted August 16, 2007 Report Share Posted August 16, 2007 You can pretty well pick the females at 1-2 weeks by the black spot. You wont get them all but it is usefull to get virgin females. Quote Link to comment Share on other sites More sharing options...
Peter McLeod Posted August 17, 2007 Report Share Posted August 17, 2007 I tried sexing the females at 1-2 weeks in frount of a bright light. Works well but very hard on the eyes. Quote Link to comment Share on other sites More sharing options...
bogglesmum Posted August 29, 2007 Author Report Share Posted August 29, 2007 Thanks for your replies guys. The male fry are starting to get colour on their tails now and some have a couple of black spots on their sides. Quote Link to comment Share on other sites More sharing options...
Dixon1990 Posted August 29, 2007 Report Share Posted August 29, 2007 i have 1 small guppy at the moment that has black on the top and bottom of its tail and a black spot on each side. Is this a male? Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted August 29, 2007 Report Share Posted August 29, 2007 Females can have black in the tail as well as males. Quote Link to comment Share on other sites More sharing options...
Alan Posted August 29, 2007 Report Share Posted August 29, 2007 In my experience it is the females that "show" colour first, as Alanmin and Peter Mc said. Look for the gravid spot to "show" and you have a female. Quote Link to comment Share on other sites More sharing options...
nick0308 Posted June 14, 2008 Report Share Posted June 14, 2008 so how old can we sex them? ive got a few babies ranging from 2-4 weeks, no color yet Quote Link to comment Share on other sites More sharing options...
Guest Posted June 14, 2008 Report Share Posted June 14, 2008 On the baby guppys I've seen you can see a gravid spot when they're born if you shine a light on them it makes it easier to see Quote Link to comment Share on other sites More sharing options...
georgeous Posted June 14, 2008 Report Share Posted June 14, 2008 Or you can have a look for a gonapodium (near the anal region, looks like the tip of a fine fish bone) HTH Quote Link to comment Share on other sites More sharing options...
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