2 lbs tilapia fillets or 2 lbs other firm white fish fillets, cubed
8 -10 garlic cloves, chopped
1 teaspoon salt
1⁄2 teaspoon black pepper
2 teaspoons fresh cilantro, chopped
1 habanero pepper, seeded and chopped (or real Peruvian Aji Amarillo, if you can find it)
8 -12 limes, freshly squeezed and strained to remove pulp, enough to cover fish
1 red onion, thinly sliced and rinsed