ocean ranching
n.— «Although these salmon are not conceived naturally, they are also not classified as “farmed” because once they reach maturity they are released for fishermen to catch. This process, called ocean ranching, has resulted in high returns of adult salmon, which has actually helped to stabilize the inconsistent life cycles of wild salmon.» —“Salmon Of The Americas Confirms The Health Benefits of Farmed Salmon” in Miami, Florida Free Press Release Center Dec. 26, 2008. (source: Double-Tongued Dictionary)