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A fish keeps swimming at the surface trying to gulp air. What does Merck call this?

Piping, a warning sign that needs checking.

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  1. Flashing
  2. Piping ✔
  3. Schooling

Why: Merck calls swimming near the surface and trying to gulp air piping, and lists it with rapid breathing as a warning sign. Purdue's 4-H guide also lists gasping at the top as a disease symptom.

Huh, didn't know that: Merck calls rubbing or scratching against objects flashing; fish do it to relieve itching.

The dad joke
Why did the fish join the choir? It had great pipes.
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References

Answer: Piping. Merck calls swimming near the surface and trying to gulp air piping, and lists it with rapid breathing as a warning sign. Purdue's 4-H guide also lists gasping at the top as a disease symptom.

  1. Merck Veterinary Manual: Disorders and Diseases of Fish www.merckvetmanual.com/all-other-pets/fish/disorders-and-diseases-of-fish
    piping (swimming near the surface of the water, trying to gulp air)
    Checked 2026-10-11.
  2. Purdue Extension 4-H 447-W Aquatic Science www.extension.purdue.edu/4-H/_docs/4-h-447-w.pdf
    Gasping for air at the top.
    Checked 2026-10-11.
  3. Merck Veterinary Manual: Disorders and Diseases of Fish www.merckvetmanual.com/all-other-pets/fish/disorders-and-diseases-of-fish
    Fish often rub against objects to relieve itching.
    Checked 2026-10-11.

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