This is the tail layer. There will be another layer between the tail and the body because it is a different color. Fill this layer with light grey.
This is a stripe just around the 'face' of this fish. I simply called it stripe layer. Fill it with light grey. It will not appear in the next few images because I was hiding the layer while drawing the next ones.
This is the face layer. It should be black.
This is the side fin layer. Fill it with yellow.
Now we have the Tail Base layer. Fill it with yellow and move it below the Body layer.