I was referring to [the question I posted earlier in Mathematics forum][1], but then I came to see [this example on Wikipedia][2]. How did they plot the system in phase space?

[![enter image description here][3]][3]

The closet relevant topic I have done is the Lorenz Equation, where I used NDSolve and then ParametricPlot3D evaluated at the fix points. [1]: https://math.stackexchange.com/questions/2237103/how-to-plot-n-species-lotka-volterra-equation-in-mathematica [2]: https://en.wikipedia.org/wiki/Competitive_Lotka%E2%80%93Volterra_equations#cite_note-L.Roques_2011-9 [3]: https://i.sstatic.net/mBzVR.png