Do you mean the entire zones, or just the nav points? I'll assume you mean the entire zones.
We know that originally, the Fralthi had 20 fighters. However, given the way these beasts have been modified over the years, that number is now closer to 50 (the Vaktoths use external airlocks though). Of those, I'd say about 20 are Gratha, 20 are Dralthi, and the remaining 10 are Kha'ha'hafs, shuttles, and other miscellenous stuff. Keep in mind though, that the player mustn't engage too many of them, because we won't be able to capture them if they're dead
. Also, remember that the other Kilrathi ship can send reinforcements if necessary, so not all ships encountered are from the Fralthi.