For the dressing, whisk all the ingredients in a bowl. Season and set aside.
Step 2
Remove the blood-line and any dark meat from the mahi mahi, then cut into 1cm pieces. Transfer to a non-reactive bowl with the dressing. Cover and chill for 30 minutes for the flavours to infuse – the acid in the lime juice will ‘cook’ the mahi mahi. Drain, reserving the dressing.
Step 3
Combine the mahi mahi, cucumber, onion and chilli in a bowl. Top with micro herbs and coconut, and serve with lime wedges and reserved dressing.