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Mortality Rate Calculator

Enter the fish count at the start of the period, the deaths during the period and the average weight.

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Calculator

This calculator runs in your browser; the data you enter is not stored.

Results

Mortality rate
1.50 %
Survival rate
98.50 %
Daily mortality rate
0.050 %
Biomass lost
225 kg
Estimated financial loss
1,463 USD

How is it calculated?

  • Mortality (%) = Dead ÷ Starting count × 100
  • Daily mortality = Mortality ÷ Number of days
  • Biomass lost = Dead × Average weight ÷ 1000

FCRSOFT

FCRSOFT does this for you automatically

You don’t need to do the calculations and checks on this page by hand every day. FCRSOFT derives them all automatically from the records entered in the field.

  • Mortalities are recorded with their causes and deducted from stock.
  • An alarm is raised when the daily mortality threshold is exceeded.
  • Causes and rates of mortality are tracked with periodic reports.
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Related tools and guides

Guide

Why Does FCR Rise in Fish?

Overfeeding, temperature, low oxygen, stocking density, disease, feed quality, measurement error and stress: the 8 most common causes of rising FCR and how to fix them.

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Choose your species and enter temperature, dissolved oxygen, pH, ammonia, nitrite and salinity to see a good, caution or critical status for each parameter.

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Fish Biomass Calculator

Calculate total biomass from fish count and average weight, the remaining fish after survival, and cage/pond stocking density (kg/m³).

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Fish Production Tracking Software

Batch-level tracking of fish stock, growth (biometrics), mortality, FCR and harvest. Monitor your production with real data and try the live demo.

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FCRSOFT

Track Mortality

Mortalities are recorded with their causes, deducted from stock, and an alarm is raised when the threshold is exceeded.

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FCRSOFT solutions

All inclusive

Enterprise Site — all products

Farm · Hatchery · Feed ERP · Processing · WMS & Supply · Sales & CRM · Finance · Maintenance · Trace & Cold Chain · B2B Commerce · Fleet & Vessel · Voyage & Chartering · Trade & Customs · Freight & Container

  • 30 full users
  • 1 sites
  • 69 modules
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