Survival Instinct - How to stop the flow, catch and cook

How to stop the flow, catch and grill ... Streams are everywhere in the jungle. They will have fish if the flow is large enough and flows down to the bottom of the mountain. The thing to do is to get some earthworms that can have fish. But that was not the right thought because I could not fish a fish. They do not eat bait. The only way is to stop the flow ...