This makes eight little sliders, enough to feed a family of four. Keep in mind, though, that younger kids may only need one slider. Serve with a generous salad or favorite veggie side.
Bake fish fillets in the oven according to package directions.
While the fish is baking, by whisking together the the yogurt, mayonnaise, capers, relish, ketchup, and mustard in a small bowl.
Set a fish fillet on the bottom half of each slider bun. Slather the top of each fillet with the tartar sauce. Scoop up a bundle of cabbage and press it into the sauce. Add pickled jalapenos, if desired.
Sandwich the buns together and serve immediately.
If you can't find slider buns, look for hamburger buns and make 4 fish sandwiches instead of 8 sliders.