so i have a batch of guppy babies that are almost 3 weeks old and are starting to develop color, but only some actually have black tails like the mom, the rest are clear. so at what age can i put them back in the tank with the mom, im not really trying to be supper effective at breedingjust tryin to give them a fighting chance.\once i can tell what their colors will be i will either feed the non colored ones to m,y ram/gourami if they are small enough, or throw them in my pond with the mosquito fish. also at what age can you fully tell their basic coloring?