Miso-marinated fish

I bought frozen fish from the supermarket today, so I tried experimenting with marinating fish with miso today!
I had leftover spring onions and an onion from last week, so I decided to add those in as well, to give some 'kicks' in flavor.
The fish I bought today was basa fish, apparently a type of catfish and a cheaper alternative from Vietnam to haddock or cod. Here's what I did
1. Rub a big lump of white miso all over the fish (I didn't take time to let it thaw out before starting the marination/)
2. Chop the spring onion into coarse chunks, and the onion into large but thin slices.
3. Mix the onions in between the fish fillets.
4. Let the fish marinate and partially thaw out.
5. Pan-fry the onions (till half-cooked) before adding the fish. Keep turning the fish to prevent it from sticking to the pan, and keep the onions above the fish so the meat comes into full contact with the heat.

Even though I didn't let the fish completely thaw before cooking it, it turned out fine because the water from the frozen fish melted and mixed with the miso, making a thick miso sauce that seeped into the meat and flavored it.

Simple but delicious! /please