Quite a few guppy questions + worm in tank q...?

[Kutay]

So i am going to breed guppies for an expirement (well kind of. I'm trying to breed for colors) So i have a few questions and one completely irrelevant one:-Irrelevant one: I bought a hornwort plant for my tank for my plant the other day and now have a worm in my tank. It looks like an inch worm that's underwater. Anyone know what it is?-How often can i feed my guppy cooked egg yoke?-How long does it take for a guppy to get color?-How long does it take to be able to determine sexes in fry?-Are recessive and dominant colors the same in all strains?-Are there any webistes that list the recessive and dominant colors and/or patterns?(any sites about guppy genetics will help too!!)-What are some ways I can help the fry grow up quickly?-Are there any sites where I can look up guppy breeders near me? (not forums)-Is it possible to get a healthy, never-bred female guppy at Petsmart?Ummm....I think that's all. I might have more in a minute though!!Don't answer unless you know for sure what you're talking about!!Thanks=)