Tallypic

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Count shrimp larvae in a photo

Count shrimp larvae and post-larvae free from one photo of a sample bowl. Check the markers in dense patches, fix any misses and share the counted image.

How to photograph shrimp larvae for counting ↓

What are you counting?135 types

For an accurate count

  • Shoot from directly aboveor straight at pipe, rebar and log ends.
  • Spread items in one layerPiles and overlaps cause misses.
  • Use a contrasting backgroundand avoid glare, shadows and blur.

How to photograph shrimp larvae for counting

  1. 1

    Use a shallow white basin

    Scoop a sample into a white bowl or tray with just enough water to cover the larvae, so they stay in one layer and stand out against the bottom.

  2. 2

    Wait for the water to settle

    Let the surface go still and the larvae spread out, then hold the camera straight above. Ripples and glare on the water hide larvae.

  3. 3

    Check clusters and the edge

    Zoom into groups of larvae and along the rim, where they tend to gather. Remove marks on bubbles or debris and add any larvae that were missed.

Larvae spread out in shallow water in a white basin, each a separate dark shape.

Photo example

Larvae spread out in shallow water in a white basin, each a separate dark shape.

The tool's sample opens saved example markers; uploading your own photo runs a new count.

494 shrimp larvae are marked in the tool's sample photo.

When to count shrimp larvae from a photo

Hatcheries and shrimp farmers count post-larvae when a batch is sold or bought and when a pond is stocked. The usual way is to count a few sample bowls by hand and scale up by volume or weight. A photo of each sample bowl makes that count quicker, and the buyer and seller can check the same marked image, which shows the total and the date.

Questions about counting shrimp larvae

Is there a shrimp larvae counting app?

You don't need to install one. Tallypic works in your phone's browser: open this page, tap Take a photo and shoot the sample bowl from directly above. Check the markers, then save the marked image and send it to the buyer or seller. There are free counts every day and no signup.

How many larvae should I put in one bowl?

There's no fixed number. What matters is that most larvae aren't touching. If they bunch up, split the sample into two bowls, photograph each one and add the totals; that's easier to check than one crowded bowl.

Can I count crab or lobster larvae?

Yes. Choose Crab larvae or Lobster larvae in the object picker before uploading. This page starts with the shrimp larvae model.

More counting guides

Steel pipesSteel pipesFace the pipe endsOpen counter & guide RebarRebarPhotograph the cut endsOpen counter & guide VialsVialsShow one visible layerOpen counter & guide CapsulesCapsulesSeparate touching capsulesOpen counter & guide TabletsTabletsMake a single layerOpen counter & guide Bacterial coloniesBacterial coloniesPhotograph the plate from aboveOpen counter & guide SeedsSeedsSpread the seeds in one layerOpen counter & guide EggsEggsShoot from directly aboveOpen counter & guide LogsLogsFace the cut endsOpen counter & guide ScrewsScrewsSpread them outOpen counter & guide CoinsCoinsLay the coins flat in one layerOpen counter & guide PVC pipesPVC pipesShoot the open ends straight onOpen counter & guide