Final answer:
Constantin Brancusi's works 'Fish' and 'Bird in Space' both use abstract representations to convey movement and essence rather than depicting realistic forms of any specific species.
Step-by-step explanation:
The work 'Fish' by Brancusi does not depict any particular fish, but instead represents the universal fluidity of aquatic life. Similarly, in his work 'Bird in Space', Brancusi portrays an abstract representation of movement rather than a realistic depiction of a specific bird species. The works of Constantin Brancusi, especially 'Fish' and 'Bird in Space,' do not attempt to depict any particular fish or bird species realistically. Instead, both works portray an abstract representation of movement. This idea of abstraction is also evident in Brancusi's other work, as seen in the elegance and simplicity of 'Bird in Space,' where it symbolizes the essence of flight without the literal interpretation of a bird. Similarly, the 'Fish' embodies a sense of universal fluidity associated with aquatic life without portraying a specific fish. In both pieces, Brancusi uses abstraction to convey the underlying attributes of his subjects.