sac fry

См. также в других словарях:

• sac fry — a newly hatched fry using the yolk sac as a food source (stages at 45°F in chinook salmon are green 0 days, eyed 38 days, sack (or sac) fry 69 days, swim up 92 days and button up 115 days) …   Dictionary of ichthyology

• sac fry — noun : yolk fry …   Useful english dictionary

• fry — 1) a young fish at the post larval stage. May include all fish stages from hatching to fingerling. An advanced fry is any young fish from the start of exogenous feeding after the yolk is absorbed while a sac fry is from hatching to yolk sac… …   Dictionary of ichthyology

• swim-up fry — fry that have absorbed their yolk sac, are ready to start feeding and rise to the surface to gulp air into the swim bladder (stages at 45°F in chinook salmon are green 0 days, eyed 38 days, sack fry 69 days, swim up 92 days and button up 115… …   Dictionary of ichthyology

• unfed fry — fry from the time the yolk sac is absorbed until it starts feeding …   Dictionary of ichthyology

• button-up fry — a salmonid fry that has not completely absorbed its yolk sac and has emerged from its spawning gravel (stages at 45°F in chinook salmon are green 0 days, eyed 38 days, sack fry 69 days, swim up 92 days and button up 115 days) …   Dictionary of ichthyology

• yolk fry — noun : fry of fish between hatching and complete absorption of the yolk sac …   Useful english dictionary

• feeding fry — a young fish whose yolk sac has been absorbed and is now feeding …   Dictionary of ichthyology

• advanced fry — noun : young fishes having the yolk sac absorbed but not yet being developed into fingerlings …   Useful english dictionary

• Salmon — is the common name for several species of fish of the family Salmonidae. Several other fish in the family are called trout. Salmon live in both the Atlantic and Pacific Oceans, as well as the Great Lakes and other land locked lakes.Typically,… …   Wikipedia

• coldwater disease — a bacterial disease of juvenile and yolk sac fry of salmonids caused by Cytophaga psychrophila (or Flexibacter psychrophilus). It occurs at temperatures below 10°C and is an external and systemic disease with lesions on the fins skin and muscles …   Dictionary of ichthyology