Pan Seared Mahi Mahi on Sauteed Rapini with a Citrus Reduction

I went shopping tonight with no agenda, but craving fish and hoping there was something available. Happiness found me with some good looking wild-caught Mahi Mahi, rapini, and ripe, juicy oranges. Rapini has such a strong flavor, spinach or bok choy would be a good replacement if you aren't a fan.

Pan Seared Mahi Mahi on a bed of Sauteed Rapini with a Citrus Reduction:
(serves 2)

Citrus Reduction:
1 whole ripe sweet orange, peel reserved, pith removed and fruit left intact
1 c orange juice
1 shallot, chopped
3 sprigs fresh thyme
1/2 c white wine
2 tbs brown sugar
1 tbs olive oil
Salt and pepper
1 tsp siracha or similar hot sauce (optional)

Rapini:
1 lb rapini, rinsed and tough stems trimmed
4 tbs olive oil
4 garlic cloves, sliced thin
Salt and pepper

Mahi Mahi:
2 6 oz filets of Mahi Mahi
2 tbs olive oil
Salt and pepper
Sesame seeds, for garnish

Directions for Sauce:
Saute shallot and orange peel in olive oil over medium heat until shallot is soft and translucent.

Add remaining ingredients and simmer until leaves have fallen off thyme stems and oranges are completely broken down. Strain sauce into a small saucepan, allow no solids to pass through. Simmer the reduced sauce over high heat until it is thickened.

Hold for service.

Directions for Rapini:
Once sauce is nearly done, add rapini to a large pot of rapidly boiling water for 1-2 minutes to blanch. Remove and drop into ice water to shock. Drain thoroughly and heat saute pan, add olive oil and cook garlic slices until slightly browning. Add drained, blanched rapini and saute with salt and pepper until bright green and wilted slightly.

Hold for service.

Directions for Mahi Mahi:
Meanwhile, while sauteing rapini, heat another pan on medium high heat and add olive oil. Salt and pepper mahi mahi filets on both sides and carefully slide into pan. Saute (presentation side down) until mahi mahi is opaque at least halfway through the fillet.
Carefully flip over and cook just a minute longer.

Plating:
Mound sauteed greens in the middle of the plate, top with fish, then sauce. Garnish with sesame seeds. Serve immediately.