Answer:

for many fishermen, the availability of indigenous species is essential for their livelihood and the overall health of the ecosystem. If these species were to go extinct, it could have significant consequences for their fishing operations.

The loss of indigenous species can disrupt the balance of the ecosystem, leading to changes in the abundance and distribution of other species. This can result in reduced catches and economic losses for fishermen. Additionally, the loss of these species may also have ecological implications, as they play crucial roles in maintaining the overall health of the lake's ecosystem.

Therefore, most fishermen would likely feel concerned or worried about the possible extinction of indigenous species. They would recognize the ecological importance of these species, as well as the impact it could have on their livelihoods. Fisheries management and conservation efforts are important in ensuring the sustainable use and preservation of these species, benefiting both the fishermen and the ecosystem as a whole.