Fcrash or FCRASHthe fishing mortality rate corresponding to an equilibrium spawner-per-recruit (SPR) equal to the inverse of the survival ratio at the origin of the stock-recruitment relationship. Used as a biological reference point. A stock exploited indefinitely at Fcrash is expected to collapse sooner or later due to recruitment failure, hence the term Fcrash. Also called Ft
Dictionary of ichthyology. 2009.