IKJ FISH HATCHERY MANAGEMENT 



Production Summary 



Some additional records that should be considered for extensive (pond) 

 culture follow. 



Water 



(1) Area in acres of each pond. 



(2) Volume in acre-feet. 



(3) Average depth. 



(4) Inflow required to maintain pond level. 



(5) Temperatures. 



(6) Source and quality. 



(7) Weed control (dates, kind, amount, cost, results). 



(8) Fertilization (dates, kind, amount, cost, results). 



(9) Algae and zooplankton blooms (dates and secci visibility in inches; 

 kinds of plankton). 



Fish 



(1) Broodstock 



(a) Species, numbers. 



(b) Stocked for spawning (species, numbers, dates). 



(c) Replacements (species, numbers, weights). 



(d) Feeding and care (kind, cost, and amounts of food, including 

 data on forage fish production). 



(e) Diseases and parasites (treatments, dates, results). 



(f) Fry produced per acre and per female. 



(2) Fingerlings 



(a) Species (numbers stocked, size, weight, date) 



(b) Number removed, date, total weight, weight per thousand, 

 number per pound. 



(c) Supplemental feeding (kind, amount, cost). 



(d) Disease and predation (including insect control, etc.). 



(3) Production per acre by species (numbers and pounds). 



(4) Days in production. 



(5) Weight gain per acre per day. 



(6) Cost per pound of fish produced at hatchery. 



(7) Cost per pound including distribution costs. 



A variety of management forms are in use at state, federal, and commercial 

 hatcheries today. The following examples have been used in the National 

 Fish Hatchery system of the Fish and Wildlife Service. These forms, or 

 variations of them, can be helpful to the fish culturist who is designing a 

 recordkeeping system. 



