Which would be a consequence of the removal of predators from a population such as the trinidadian guppy population?

The consequence of the removal of predators from a population such as the Trinidadian guppy population  is that the Guppy color patterns would change; guppies would produce fewer but larger offspring; the nitrogen excretion rate would increase and the rate of growth of primary producers such as algae would increase.  

Nerves are problay the number 1 thing in the body