Use this calculation to compare aquaculture production, feeding, growth, water-quality, or hatchery measurements collected with the same definitions and units.

Hatched Larvae (larvae)

Required number in larvae.

Viable Eggs (eggs)

Required number in eggs.

The cited overview of Aquaculture supplies background for the terminology and domain context used by this tool.^[1]

Measure hatching success against the count of viable eggs, not all eggs laid. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Hatching Percent (%)

Returned number in %.

• Species, life stage, temperature, salinity, system design, sampling method, and management practice can materially change aquaculture measurements and suitable operating ranges.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Complement the calculation with calibrated water-quality instruments, representative sampling, feed and mortality records, and species-specific guidance from qualified aquatic-health or production professionals.

• Fertilization Rate

  Measure the share of assessed eggs that show fertilization.

• Larval Survival Rate

  Measure larval survival over a specified observation interval.

• Mortality Rate

  Measure recorded deaths as a share of initial stock, excluding unobserved losses.