I got a piar of saddles (2.5" & 2"

that have yellow mouths and flourecent yellow fins. For now they will be the proud owners of a 10 gal species tank with a white carpet. Does any one here have an approximation on there growth rate and when they reach sexual maturity?
I've been staying a few feet from the tank to let them adjust as ive read they are alittle skittish and somewhat a more sensitive species but have spawned in captivty with viable offspring sporraddically. I want to get an adult pair for my show tank but they seem to be impossible to find, any clues?