Mix together the tuna, garlic oil, chipotle puree, 2 tablespoons of the cilantro and the lime zest in a medium bowl. Season with salt and pepper. Mix together the sugar, mango, cucumber, red onions, red peppers, 1 tablespoon cilantro and the lime juice in another bowl and season with salt and pepper.
Lay the taro chips down onto a plate and top each with 1 tablespoon of tuna tartare. Top each chip with 1 teaspoon of the guacamole and the mango mixture, and garnish with more cilantro.