Colt, Physiological changes associated with live haul: maintaining healthy fish

The main purpose of this research is to refine the quality of life and survival rate of transported fish, acknowledging that death during transportation has a multifaceted and hard-to-quantify economic impact. The study aims to scrutinize the influence transportation has on live fish and establish a model predicting post-transportation mortality rates. By factoring in hauling conditions and fish quality at journey's end, this model can offer a robust gauge of transportation intensity and fish condition. Utilizing our findings, we intend to suggest alterations to current transport systems for collaborators in the industry. 


  1. Compare crowding and different net types on bodily injury
  2. Determine effects of pre- and post-transport salt-dips on survival after transportation of tilapia
  3. Repeat assessment of parasitic and bacterial load of transported tilapia, using fish from a different grower’s farm
  4. Determine the effects of fasting on ammonia levels of transport water
  5. Conduct detailed water quality monitoring during tilapia and adult chinook hauling trip
  6. Modify existing holding systems for 1-1½ lb. tilapia and develop simulated hauling systems for laboratory use
  7. Assemble low light video systems for directly observing tilapia in raceways, crowding, and in hauling tanks
  8. Conduct outreach projects

Project Summary

Duration: 4 years
Funded Date: 08/01/2005
Funding level: $352,100
Location: non-WRAC states, Oregon - OR, Washington - WA
Species: Salmon, Tilapia
Topics: Live Haul

University of Washington
School of Aquatic & Fishery Sciences

Box 355020, Seattle, WA 98195
1122 NE Boat St, Seattle, WA 98105


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