Figure 7From: Periodic solution and control optimization of a prey-predator model with two types of harvesting Numerical simulations in the case \(\pmb{0< h< x_{E_{1}}<(1-p_{h})h+\tau_{h} <x_{E_{2}}}\). (a) Phase portrait of prey fish density and predator fish density on \(h=1.5\). (b) Time series of prey fish density. (c) Time series of predator fish density.Back to article page