The increase in fish production figures on Enggano Island will also increase the volume of fish waste, which could also have a negative impact on the environment. One of the products obtained by fishermen is Tiger Grouper and Lencamfish. The bones of Tiger Grouper (Epinephelus fuscoguttatus) and Lencamfish (Lethrinus lentjan) contain a lot of protein, including calcium and phosphorus. Calcium a…