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Fish Suffer Up to 22 Minutes of Intense Pain When Taken Out of Water – ScienceAlert

June 21, 2025
in General, Science
Fish Suffer Up to 22 Minutes of Intense Pain When Taken Out of Water – ScienceAlert
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New research reveals that fish can experience up to 22 minutes of intense pain when removed from water, challenging long-held assumptions about aquatic animal suffering. The study, highlighted by ScienceAlert, sheds light on the often-overlooked distress endured by fish during common practices such as fishing and transport. These findings not only deepen our understanding of fish physiology but also raise important ethical questions about how humans interact with aquatic life.

Fish Experience Prolonged Distress After Being Removed From Water

Recent scientific research has uncovered that fish experience up to 22 minutes of intense physiological and neurological distress once removed from their aquatic environment. Contrary to previous assumptions regarding their tolerance, studies show that the removal triggers a prolonged state of suffering characterized by rapid heartbeat, irregular gill movement, and elevated stress hormone levels. This distress period far exceeds the brief discomfort once believed, highlighting significant welfare concerns for both commercial fisheries and recreational anglers.

Key findings from the study emphasize:

  • Neurological signals: Activated pain receptors continue firing for an extended time post-extraction.
  • Respiratory failure: Oxygen deprivation triggers irreversible tissue damage within minutes.
  • Behavioral changes: Erratic swimming and attempts to return to water persist long after removal.
ObservationDuration (minutes)Effect
Heart rate elevation15-22Increased stress
Gill movement irregularities10-20Impaired respiration
Neuropathic pain signalsUp to 22Prolonged suffering

Scientific Insights Reveal Intense Pain Duration in Fish

Recent studies have drastically reshaped our understanding of how fish experience pain, revealing that these aquatic creatures endure acute and prolonged suffering when exposed to air. According to the latest research, fish can suffer intense pain for up to 22 minutes after being removed from their watery environment. This painful response is evidenced by physiological stress markers, behavioral changes, and activation of neural pathways similar to those found in mammals, challenging long-held assumptions about fish insensitivity to pain.

The research highlights several key findings regarding this enduring pain response:

  • Elevated cortisol levels: Indicating severe stress and prolonged discomfort during air exposure.
  • Rapid fin clamping and erratic movements: Behavioral signs that underscore the fish’s distress.
  • Activation of nociceptors: Sensory neurons responsible for transmitting pain signals within fish brains.
Duration Out of WaterPeak Pain ResponseRecovery Indicator
0-5 minutesRapid escalationMinimal
6-15 minutesMaximum intensityVery low
16-22 minutesGradual declinePartial

Experts Advocate for Improved Handling Practices to Minimize Suffering

Leading scientists and animal welfare advocates are urging for immediate reforms in current fishing and handling methods to reduce the distress endured by fish when removed from water. Recent findings have revealed that fish experience up to 22 minutes of intense pain, underscoring the urgent need to implement more humane practices on boats and in commercial fisheries. Experts recommend minimizing air exposure and improving equipment design to ease the transition for fish, emphasizing that even small changes can significantly alleviate suffering.

Proposed improvements include:

  • Use of wet gloves to handle fish gently and prevent skin damage.
  • Shortened air exposure times by promptly returning fish to water when possible.
  • Development of automated sorting systems that reduce manual handling.
  • Training programs to raise awareness among fishermen about fish pain and stress.

Adopting these measures not only benefits the welfare of aquatic animals but also aligns with growing consumer demand for ethical fishing practices, potentially impacting market preferences and regulatory policies worldwide.

Handling PracticePotential Benefit
Wet GlovesReduces skin abrasion and stress
Rapid Water ReturnLimits duration of pain
Automated SortingMinimizes human-induced injury
Fishermen TrainingRaises awareness and encourages care

The Way Forward

As awareness of aquatic animal welfare grows, these findings underscore the urgent need to reassess fishing practices and regulations. Recognizing that fish endure prolonged and intense pain when removed from water challenges long-held perceptions and calls for more humane treatment. Moving forward, policymakers, scientists, and industry stakeholders must collaborate to minimize suffering and protect the well-being of aquatic life.

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