Good team. I like to have a Grass-type, but I think you've got enoguh variety to make up for it. But what type is Gorebyss? I receognize the name but I'm having a brain fart...
Gorebyss is a water type, it's on of the two evoloutions of Calmperl. You get it by getting the scale(not tooth) from the captain in slateport give it to clamperl and trade it.