Detect fish in pictures

The project consists of: 1. Pick up the image file; 2. Identify the fish in the image; 3. Make an autocrop of the fish. If there are more fish, make multiple crops. 4. For each crop generate only the outline of the fish in black and the rest in white; 5. If the image has no fish then generate a blank image; 6. Save each crop with the original file name, eg [login to view URL] -> [login to view URL] in the case of only one crop and [login to view URL], [login to view URL], ..., [login to view URL] for the n-th crop . Important: The generated crop images should be rotated so that the mouth is left and the dorsal fin facing up.