The First Week Is About More Than Survival
After stocking shrimp seed, farmers often focus on whether the post-larvae are alive and moving normally. But survival alone does not tell the full story.
During the first week, farmers need to understand how the seed is adapting to the pond, whether feeding is progressing normally and whether the water conditions remain suitable. Early observations also provide a baseline for comparing shrimp performance during the following weeks.
- Observe Shrimp Behaviour
Healthy post-larvae should gradually settle into their new environment. Farmers should observe their swimming activity and distribution rather than expecting every shrimp to behave identically.
Unusual swimming, weak activity or shrimp gathering near pond edges may indicate a problem. These signs are not a diagnosis by themselves, so farmers should check water quality and other possible causes before taking corrective action.
- Monitor Water Quality Daily
Water conditions can change even when the pond looks normal. Dissolved oxygen, temperature, pH and salinity are important parameters to monitor during the first week.
Dissolved oxygen deserves particular attention during early morning, when levels may be lower after overnight respiration. pH can also change between morning and afternoon.
Recording readings at consistent times helps farmers identify patterns instead of relying on a single measurement.
- Check Whether Feeding Is Progressing Normally
Feeding practices during the first week should match the size and condition of the post-larvae. Farmers should avoid increasing feed quantities blindly.
Observe feeding response and follow the farm's feeding plan. If feed remains uneaten or the shrimp show a sudden reduction in feeding activity, investigate the reason before increasing the ration.
Poor feeding response can be associated with stress, unsuitable water conditions or other health and management issues.
- Look for Early Signs of Mortality
Check the pond edges and other accessible areas for dead or weak post-larvae. Any unusual mortality should be investigated promptly.
Farmers should review the seed's condition, acclimation process, transport history and current pond parameters. If mortality continues or increases, seek help from a qualified aquaculture professional rather than applying treatments without identifying the cause.
- Keep a Daily Record
A simple daily record can help farmers recognise changes before they become more serious.
Record water-quality readings, feeding quantities, feeding response, unusual behaviour and any mortality observed. Comparing these records across several days is more useful than relying on memory.
For example, a gradual reduction in feeding response combined with changing water-quality readings may provide more useful information than either observation alone.
What Should Farmers Avoid During the First Week?
Avoid making several major management changes without a clear reason. Unnecessary treatments, sudden feed adjustments and poorly planned water exchange can create additional stress.
Instead, maintain stable conditions, monitor the pond consistently and investigate unusual observations before deciding on corrective measures.
Bottom Line
The first week after stocking is an important period for establishing a clear picture of seed adaptation and pond conditions.
Observe shrimp behaviour, monitor water quality, check feeding response and record daily changes. These simple practices help farmers identify problems early and make better-informed decisions as the crop develops.
