State four equipment used for harvesting a fish

Explanation:

Equipment required in harvesting fish include, seine nets, scoop nets, clean plastic buckets and baskets, clean source of water and clean fish storage containers. Once harvested, fish should be handled with care and transported to the market while still fresh.

Feed appropriate to your fish stock

Fuel for running the operations

Medicines because the odds of illness spreading through your stock are higher than you may expect

Diagnostics equipment and supplies for measuring pH balance and other needed maintenance

The frequency would be stable.

Explanation:

Based on the most common symptoms of cystic fibrosis, the disease only appears on adults and elderly. This feature means that the frequency of the disease would not drop or raise because they would still reproduce and pass the allele from generation to the next, maintaining the frequency stable.