Tino-um is a vernacular way of cooking with all the ingredients wrapped in banana leaves then placed over heat, directly or indirectly. And its one of the best ways to cook lobo-lobo which are minute silver fishes around half an inch long.
After washing the fish, just place them in banana leaves (partially warmed over fire so that it wont easily break) together with tomatoes, onions, garlic, chives, chili pepper and seasonings (like salt and pepper or you can opt not to). Over low heat, place the wrapped ingredients in a pan and cook for a few minutes. You can also place small amount of water in the pan to lessen the heat that directly reaches the "wrap". When done, you can also opt to sprinkle olive or sesame oil before serving.