Fluids with low specific heat capacity can be identified by using resources like MatWeb, where users can filter for specific heat values. A specific heat capacity below 0.45 J/gK indicates good heat conduction properties, similar to iron. However, it's important to note that "heat conductor" and "low specific heat capacity" are not synonymous; higher heat capacity often correlates with better thermal conduction. The discussion emphasizes the distinction between these properties and the need for clarity when discussing thermal characteristics of liquids. Understanding these concepts is crucial for applications in heat transfer and material science.