A Stage-Structured Fishery Model for African Catfish and Nile Tilapia Feeding on Two Food Resources with Harvesting

Figure 3

Dynamics of African catfish, Nile tilapia, and two different food resources. The –axis shows the biomass in grams per litre (in a logarithmic scale) for each fish compartment together with the food resources. The initial values are chosen positive; all harvest rates are set to 0.005 per day; other parameter values can be found in Tables 3–5.