Fish are aquatic species which we all know about to different extends. But have you ever really taken time to look at a labelled diagram of a fish in detail? Like humans, fish have different body parts each playing a specific function. These body parts make fish adapt to their aquatic milieu in different interesting ways. In this diagram, students are asked to drag and label the parts of a fish through an online worksheet that functions like an online biology game. Multiple attempts are allowed and students can practice until they master the anatomy of a fish. This activity is free and can also be used in the classroom. This exercise is for students in 1st, 2nd, 3rd, 4th, 5th, 6th and 7th grades.