The graph illustrates what has happened over an 8 year period, when non-native nile perch were introduced to lake malawi in africa. environmental factors remained the same during this period (i. e., temperature, ph, water levels, etc.) based on the data, what recommendation would you make to african biologists? a) remove or reduce the nile perch as quickly as possible, as it is clearly out-competing the pike cichlid. b) remove the remaining pike cichlids, as they are competing with the nile perch. c) reduce both fish populations, or they will starve one another out. d) there is no competition between these species of fish.