Fish survival rate and harvest biomass calculator.
Estimate survivor count and harvest biomass from initial stock, expected survival and harvest weight.
Fish survival rate and harvest biomass inputs
Planning tool only. Monitor water quality and animal behaviour, validate species-specific limits and follow the direction of a qualified aquaculture professional before changing stocking, feed, aeration or water chemistry.
Method: Survivor count equals initial fish multiplied by survival rate. Harvest biomass equals survivors multiplied by harvest weight.
Inputs used: Initial stocked fish = 1,000; Expected survival = 85 %; Harvest weight per fish = 700 g
Assumptions: The result uses the values, units and options shown in the input snapshot.
Scope and warnings: Planning tool only. Monitor water quality and animal behaviour, validate species-specific limits and follow the direction of a qualified aquaculture professional before changing stocking, feed, aeration or water chemistry. Rounding and excluded real-world terms can make an external result differ.
How this fish survival rate and harvest biomass calculator works
Survivor count equals initial fish multiplied by survival rate. Harvest biomass equals survivors multiplied by harvest weight.
A worked example
1,000 fish at 85% survival and 700 g harvest weight produce an estimated 595 kg biomass.
Does this forecast farm production?
No. It is a transparent scenario. Survival and harvest weight change with health, feed, oxygen, weather, disease control and harvesting practice.
Calculations run on your device. Review your results before exporting or sharing them.
Use scenarios rather than one forecast
Survival rate turns initial stock into an expected survivor count; harvest weight then turns those survivors into total biomass. Try several plausible cases for planning.
This is not a promise of yield. Mortality, grading, disease, weather, oxygen and harvest practice can materially change the final result.
Published by ToolMitra — methods and editorial approach.