Well, I'm just going to sum up the preferences of all the species here.
Hive :
- Warm planet with relatively little surface water
- High oxygen pressure, lower gravity [Biological Requirement]
Guwaghaii :
- Standard Diverse planet
- Lower gravity (I mean, they're like 20 meters tall) [Biological Requirement]
Bloons
- Gas giant
Raves
- Terrestial planet with high seismic activity
Skalkr
- Dangerous Desert planet. Unknown mineral deposits
Koharu
- Iceplanet with underwater oceans
Destrachen
- Lava planet
So,
Destrachen and Bloons are not going to fit in with anyone. Technically, we can stuff all the others on the same planet.
A terrestrial planet with significant seismic activity. The Koharu live on the planet's significant polar areas, the Guwaghaii on a nearby ex-volcanic island. The Hive would live in a Jungle area pockmarked by Hawaian type volcanoes (Not that dangerous, constantly active, have a tendency to form tunnels.) , The Raves can be placed wherever UR wants them, the Skalkr in the deserts.
How about a planet relatively close to the star and tidal lock to the star, you canhave the everheated side and the frozen night side
That could actually work, I suppose. Would allow us to put the Destrachen on the same planet as well, in a high volcanic area.
You'd have deserts on the permanent side, permanent Hadley cells on the Dark/light border, which you feed rainforests there (and massive storms) and then a polar area.
Sad thing, is, you don't have a day night cycle.