Foli Macher Jhol or Bronze Feather Back Fish curry

Foli fish is a very tasty and healthy fish. But has lots of lots of bones in it. Since childhood, I've never had this fish. I was too much scared of such bony fishes, like foli, bata, charapona. Though I'm a big fan of Hilsa. Somehow I manage to eat hilsa. But this one I've never had in my life. My mom is a great lover of this fish. She can die for this fish. She loves to cook light runny curry with this fish and have with plain rice. But in recent days these fishes are not easily available in Kolkata. But whenever she gets this, definitely she would buy this fish. Though I and my dad never have this fish. We are happy with our dal bhat. In Hyderabad only on Sunday in several places temporary fish market are available. And the fishes are too cheap there, and you can get varieties of Bengali and South Indian fishes there. I used to get 2,3 types of fishes every Sunday from there. A few weeks ago, I went for Sunday fish market. And by mistakenly I've bought Foli/Folui fish, though it was Chitol fish and then came back to home, I thought of showing the picture of the fish to my mom to confirm whether it was chitol or not. But seeing the picture of the fish, my mom just jumped in joy. as it was foli her favorite fish. But I became scared of the fish. " How will I eat that fish? It's too bony. Though it was not very costly, still wasting food is not good. so thought to give it to my husband. He can manage this types of bony fish. So the first day I cooked the fish with mustard paste & gave it to him. He ate it nicely. When I told my mom about that, she told me to cook the fish in the very simple way and asked me to eat like I eat Hilsa. I just followed her recipe and cooked the fish, and believe me the curry was so tasty and the trick she told me actually worked and I ate 2 times the fish curry. I was runny but spicy curry. And with steamed rice, it tasted like heaven. So no more boring stories, let's check the easiest recipe....