- catch per unit effort
an older term for the catch in numbers or weight taken for a given amount of fishing effort over time using specific gear, expressed as a ratio. Often considered an index of fish biomass or abundance - a decline in CPUE usually indicates a decline in the stock. May be used as a measure of economic efficiency of fishing. Also called fishing success, availability, catch per effort. Abbreviated as C/E, CPUE. The more recent form is catch/effort (C/f or Y/f) where C is catch in numbers, Y is catch in weight, taken by a defined unit of fishing effort, f
Dictionary of ichthyology. 2009.