About Lesson
Stages of fish transportation
- Spawn or eggs: Blastula stage or beyond morula stage.
- Hatching or larvae: 5-10 mm (3-10 days)
- Fry stage: 1-5 cm (3-4 weeks)
- Fingerling stage: 7-10 cm (4-10 weeks)
Causes of fish mortality in transportation
- Oxygen starvation due to constant respiration and oxidation of excreta.
- Accumulation of toxic substances like CO2 and NH3.
- Sudden fluctuations in temperature.
- Hyperactivity, stress and exhaustion of the fish due to splashing in the container wall.
- Diseased fish and due to weakness
- Physical injury.
Characters of fish for transport
- Healthy and active
- Free from diseases
- Not very small and weak
- Treated against disease
- Well-conditioned
