Are all Tyranids controlled by the same Hive Mind? Or does every hive fleet have its own?

One of my dads wargaming friends has a cat, and when it sleeps on his gaming table he uses it as Impassible Terrain.

>Ghoul Stars is what I love so much about 40k.

It's just Necron acting spoopy.

It's not actually attributed to a single specific source, though of course that doesn't make it any more credible, since it's only presented as baseless speculation to begin with. Much like their "Penance of the Elder Gods" title, or the belief that they've been sent by the Emperor to punish mankind for its wickedness.

5E:
>Whether the Tyranids made this perilous journey because they had already consumed everything of worth in their home galaxy or in flight of another, even more fearsome race, is unknown.

6E:
>Some have even speculated that the Tyranids are in flight from an even greater threat, be it a galactic disaster or another fearsome race, and have risked the nothingness between galaxies rather than face extinction.

Try the Necrons' original introduction.
>Or such at least is the tale that men tell. A tale of things I had never expected to see, to witness for myself the Seal of Terra flicker red in the globe-light, or glimpse with my own eyes those terrible watchmen, or feel the waxy touch of ancient records made in black ink upon human skin. Who could have foreseen the discovery, time-after-time and throughout human history, of such evidence of unmistakable malice. Now I hold in my shaking hands a revelation of such magnitude that all human endeavour seems vain and the flame of hope flickers in the wind of despair.

Nope. Although they've never confirmed that they're running away from anything. Or that they've consumed multiple galaxies.
All just interesting Imperial speculation.

Why do you think psykers get mad near the shadow in the warp?

>Or that they've consumed multiple galaxies.
The 5th edition rulebook did this one:
>Behind the Hive Fleets lie the barren husks of a dozen galaxies already consumed.
It's just a throwaway line, but it is there, so when you see people claiming that the Tyranids have eaten 12 galaxies, that's where it came from.

They aren't controlled by it or enslaved by it so much as they are it. They are all one unified mind just using trillions of bodies. But yes there is only one hive mind

Fuck off you Jew. You could say that about any thread ever created on any forum ever.

This one nailed it, covered all the bases.