Welcome to Librarium Online!
M codex is around here somewhere but I can't find it Grr... oh well. I was wondering(moreso forgot) which tyranids can fleet of claw? or can they only do it if its listed in their profile because I seem to always get the impression they all can fleet. Rippers in particular I want to know about.
Gaunts (both types), genestealers, raveners. Rippers cannot.
Your confusing the quick movement through terrain with fleet. All tyranids have the ability to move quickly though terrain but only some have fleet.