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Calcimator

Hatchery Production

Calculate fingerling output from a fish hatchery based on eggs spawned, fertilization rate, hatch rate, and fry survival rate.

Inputs

%
%
%

Results

Fingerlings Produced

44,625

Fertilized Eggs85,000
Hatched Fry63,750
Overall Survival Rate44.6%
Eggs Per Fingerling2.2
Lost at Fertilization15,000
Lost at Hatching21,250
Lost During Rearing19,125
Total Mortality55,375
How to Use This Calculator
  1. Enter Eggs Spawned, Fertilization Rate, and Hatch Rate.
  2. Set Fry-to-Fingerling Survival.
  3. Review the Fingerlings Produced result.
  4. Use Fertilized Eggs and Hatched Fry to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Eggs Spawned

Eggs SpawnedFingerlings Produced
1,000,090446,291
3,500,0651,561,904
6,500,0352,900,641
9,000,0104,016,255

What each input means

Eggs Spawned
Total number of eggs collected from broodstock spawning.
Fertilization Rate
Percentage of eggs successfully fertilized. Good broodstock condition gives 80-95%.
Hatch Rate
Percentage of fertilized eggs that successfully hatch into fry. Typical: 60-90%.
Fry-to-Fingerling Survival
Percentage of hatched fry that survive to fingerling size (typically 1-3 inches). Typical: 50-80%.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Eggs Spawned = 100000, Fertilization Rate = 85, Hatch Rate = 75, Fry-to-Fingerling Survival = 70 = 4 input(s) provided
  2. Calculate Fingerlings Produced
    Fingerlings Produced
    44625 = 44625
  3. Calculate Fertilized Eggs
    Fertilized Eggs
    85000 = 85000
  4. Calculate Hatched Fry
    Hatched Fry
    63750 = 63750

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