<｜begin▁of▁sentence｜>### Instruction:
As a marine biologist, you have been conducting research on the interactions between various marine organisms and the physical, chemical, and ecological factors within their environments. Now, as you work on a project involving the study of various species of fish in a specific area, you need to accurately identify and differentiate between them. You have collected data on a particular fish species, including its physical dimensions, such as width and height, and its precise position in the marine ecosystem. 

Now, you need to use the knowledge relevant to your field and the available tools, such as the networkx API, to retrieve and print a unique identifier, similar to a hash code, for this fish species based on its physical characteristics and position in the ecosystem. This will allow you to accurately track and distinguish this species in your research and conservation efforts.
### Response:
import matplotlib.pyplot as plt
from matplotlib.patches import Rectangle

# Create a Matplotlib figure and axis
fig, ax = plt.subplots()

# Create a Rectangle object
rect = Rectangle((0.1, 0.1), 0.5, 0.5)

# Get the hash of the rectangle
rect_hash = hash(rect)
print(f'The hash of the rectangle is: {rect_hash}')

# Add the Rectangle to the Axes
ax.add_patch(rect)

# Display the plot
plt.show()
<|EOT|>
