Fillet and skin the whitefish, then cut into 1 1/2 inch cubes.

Thread about 5 pieces of fish onto each skewer.

Sprinkle the fish skewers lightly with salt.

Prepare the marinade by making a paste from the garlic, ginger, ground coriander, garam masala, cayenne pepper, and plain yogurt.

Evenly coat the fish skewers with the prepared marinade.

Let the marinated fish skewers sit for a few hours to allow the flavors to meld.

Preheat grill to medium heat.

Grill the fish skewers, turning occasionally, until cooked through and slightly charred (about 8-10 minutes).

Brush the skewers with a little vegetable oil during cooking if needed.

Garnish the cooked skewers with lemon wedges and thinly sliced rings of seeded green chili peppers before serving.