Raceway (aquaculture)

A raceway, also known as a flow-through system, is an artificial channel used in aquaculture to culture aquatic organisms. Raceway systems are among the earliest methods used for inland aquaculture. A raceway usually consists of rectangular basins or canals constructed of concrete and equipped with an inlet and outlet. A continuous water flow-through is maintained to provide the required level of water quality, which allows animals to be cultured at higher densities within the raceway.^{[1][2][3][4][5]}

Freshwater species such as trout, catfish and tilapia are commonly cultured in raceways.^{[6][7][8][9][10]} Raceways are also used for some marine species which need a constant water flow, such as juvenile salmon,^[9][11][12] brackish water sea bass and sea bream^[13][14] and marine invertebrates such as abalone.^[15]