Think this over: Aquasharks always been kinda pirates, but how did they appeared on a planet that full of water together with peaceful Aquanaut miners?
Also I think that Aquaraiders are affiliate faction of Spyrius or Blacktron who been sent to overtake Aquasharks and deal with mining operations once and for all.
Stingrays could possibly be not native people, but somethnig like Insectoids: an isolated expedition that forced to adapt.
All good points. Aquasharks show up on Holox in the Insectoid Invasion book, so the water factions aren't necessarily confined to one planet. IIRC Aquaraiders had some of the heads from the Spyrius figures, for whatever that's worth. I've tried to clarify the present nature of the destroyed worlds this time around.
I've added Zark, Ogel, and Omega to the list, all from the Captain Indigo feature in the old Bricks 'n Pieces magazine. I had no idea that Brickset had an archive of old magazines; it's a really useful resource that's well worth checking out. Apparently the old Castle sets had a bit of storyline to go with them--who knew?