Can you explain the concept of fish bone/ Ishikawa diagram? There are situations where we need to analyze what caused a failure or problem in a project. Fish bone or Ishikawa diagram is one of the important concept which can help you list down your root cause of the problem. Fish bone was conceptualized by Ishikawa, so in the honor of its inventor this concept was named as Ishikawa diagram. Inputs to conduct a fish bone diagram comes from a discussion and brain storming with people who were involved in the project. The below figures show how the structure of the Ishikawa diagram is. Below are a few sample fish bone diagrams. The main bone is the problem which 1