Fish populations are vital components of aquatic ecosystems and play a significant role in maintaining ecological balance. However, various factors such as habitat destruction, pollution, overfishing, and climate change have led to a decline in fish diversity and population sizes. Restoring and enhancing fish diversity is essential for both ecological and socio-economic reasons. One promising avenue for achieving this is by targeting certain molecular targets that regulate gene expression without altering the underlying DNA sequence. These modifications can occur relatively quickly in response to environmental cues, allowing the fish populations to adapt rapidly to the changing climatic conditions. Using this nature-based strategy, we aim to promote the adaptation, survival, and reproduction of various fish species, ultimately increasing overall diversity.