A video recently trended on a popular social media platform about how a fish farmer in Delta State lost hundreds of fish, to the current heat wave in Nigeria. Although the authenticity of the cause of death of the fish, as claimed in the video, could not be ascertained as of press time, FarmingFarmersFarms, however, swung into action by contacting some experts to discuss issues around the temperature rises in the country. Just recently, the Nigerian Meteorological Agency (NiMET), warned that tougher days are ahead as temperatures have now hit 41°C over the North and 39°C over the South, explaining that there are severe health implications of the changing conditions in the country.
Most of the warnings were directed to fish farmers using artificial tanks this period. Below are some of the helpful tips identified by experts:
1. Temperature monitoring: Fish farmers must rise up to the task of regularly checking the water temperature in the pond. Changes must be easily identified and addressed. Fish are sensitive to temperature changes, so maintaining an optimal range is crucial.
2. Aeration: Increase aeration to enhance oxygen levels in the water. Higher temperatures can lead to lower dissolved oxygen, which may stress the fish.
3. Shading: Provide shading for tanks to reduce direct sunlight exposure. This helps control water temperature and minimises stress on the fish.
4. Feeding schedule: Adjust feeding times to cooler parts of the day, such as early morning or late evening. Fish are more active during these times, and it reduces the metabolic heat generated.
5. Water quality: Regularly monitor water quality parameters like pH, ammonia, and nitrate levels. High temperatures can exacerbate water quality issues.
6. Species selection: Consider the heat resistance of fish species. Some species are better suited to warmer conditions, so choose accordingly. If you are not well experienced in the sector, please, learn to ask questions from experts and experienced farmers.
7. Emergency plan: Have contingency plans in place for sudden temperature spikes. This could include emergency aeration systems or partial water changes.
8. Tank insulation: Insulate tanks to minimise heat absorption. This can be achieved through shade netting or using materials that reflect sunlight.
9. Disease prevention: Warm water is conducive to certain diseases. Implement preventive measures, such as regular health checks and proper sanitation from time to time.
10. Consultation: Seek advice from local aquaculture experts or extension services for region-specific recommendations during hot periods.
