Bycatch Rate Calculator

Calculate bycatch ratio, discard rate, BPUE, and fleet-wide bycatch estimates from fishing operation data for fisheries management.

Target catch (kg)

Total bycatch (kg)

Discarded catch (kg)

Fishing effort (hours)

Number of sets/hauls

Fleet total effort (hours)

Tab to move between fields

Bycatch ratio (%)

13.79

Discard rate (%)10.34

BPUE (kg/hr)8

CPUE (kg/hr)50

Fleet bycatch estimate (t)400

Gear selectivity (%)86.21

Retained Bycatch Kg200

Bpue Per Set40

How to Use This Calculator

Enter the total catch weight or count for the fishing trip or set.
Input the bycatch weight or count (non-target species discarded or retained).
Review the bycatch rate as a percentage of total catch and the bycatch ratio.
Compare to fishery-specific bycatch limits or observer data benchmarks.
Report bycatch data to your observer program or fishery management authority as required.

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