You know that your fillets are ready once they turn golden brown. Take them out of the oil and set them aside on some kitchen towels.
Now, its time to make the sauce. It's really easy. All you need to do is mix some ketchup, oyster sauce, light soy sauce, white vinegar, sesame oil, sugar and pepper with some chicken stock. You can also add in some chili paste too if you like. Apart from that, I would also add in some syrup from the canned fruits that I would be using later on. There is really no fix ratio in all those ingredients. Some people like it really sour and some people like sweet. The best thing would be just to taste the mixture and continue to adjust the amount until you get the taste that you like. For me, I like it on the sweeter side. Once you are done with the sauce mixture, set it aside.
Alrighty, now we can put it all together. Start off by sauteing one large onion and one green pepper that has been cut into bite size pieces.
Then, add in a can of mixed tropical fruits. Remember to drain away the syrup before adding the fruits in. If you do not like mixed tropical fruits, you could also just use canned or fresh pineapples.
After sauteing the vegetables and fruits for a bit, add in the sauce mixture. Allow it to simmer until it comes to a boil. Then, add in some cornstarch that has been mixed with a little bit of water. This will help thicken up the sauce. Once the sauce has thicken, it's ready to be served. I would usually just add in my fish fillets into the sauce and give it a good mix. You could also place your fillets on a serving platter and pour the sauce over it. Either ways, it will be yummy! You can serve it with some steamed rice or if you like, you could even eat it with noodles. Try it out and let me know if you like it! :D