The objective of this research was to quantify the physical, chemical, and biological characteristics of experimental ponds, stocked with Oreochromis niloticus and fertilized only with phosphorus, during the dry and rainy seasons (CRSP First Work Plan, undated). Fish yields after 150 days were evaluated, and dry and rainy season results were compared. The results of the Cycle I Pond Dynamics/Aquaculture (PD/A) CRSP dry and rainy season experiments, conducted at the El Carao Aquacultural Experiment Station, Comayagua, Honduras, are reported herein.