There was major competition between the teams of fish. Flame used to keep the peace between the teams, since it was something to do since Red died. But Goober's team and Dart's team were too competitive. Flame just couldn't take it anymore. He ran out, and it went crazy between Goober's Team and Dart's. The fish tank became a war zone. Snoopy and Sally bailed out before it was too late. Goober thought Dart's team was getting too much power too quickly, and they all dissapeared without a trace, Leaving Goober's team- Whitey, Blackie, and Half-pint- to full rule of the tank.
Here is the previous status of all the fish before being driven out by Goober's team.
Black skirted tetras- Goober's team
Goober's the senior member of the team. He's the largest. Whitey and Blackie could quite easily decide to fight for the team leader position. Goober's holding on strong, though. Goober's team is the oldest, so they lead the tank, and keep the others at bay.
Neons- Dart's team
Code name: The Blues
The Blues are not as old as Goober's team, but they're working their way up. They're constant competition for Goober's team, because they are six and Goober's team holds four. Dart had been leading a fish revolt, which is about the time he lost most of his tail. Everyone suspects Goober, but no proof has been found.
Snoopy and Sally
These two aren't team members. They dislike the teams, because of the constant competition and threat. I hear they ran off recently, because no one can find them.
Flame
Flame's about the closest thing to a team mediator. He keeps the teams from being too rowdy. It's extremely hard for him since Red died. Red was the only other one of his species, and since her death, Flame's been reluctant to join any team.