Stocks of Bluefin Tuna, and other fish populations, have dropped by eighty percent due to illegal fishing activities and over-fishing done by humans. Bluefin Tuna are popular to catch because of their large, domineering size.
Bluefin tuna are considered a delicacy for sushi and sashimi and are sold for a lot of money. Due to the potential high earnings in return for this species of fish, fisherman are highly motivated to capture Bluefin tuna, putting them at higher risk. This is a problem because Bluefin are large and fast, making them a top undersea predator. Their deaths in large numbers upset the food chain balance under the sea.
Many aquatic lives have started to decline in numbers because of fishing activities of humans. The answer to the above questions are as follows:
1. The reason for decline in Stocks of Bluefin tuna by 80% and other such commercial fishes is illegal fishing.
2. Bluefin tuna fish is particularly at risk because of its big size and the fact that it is considered a delicacy.
Bluefin tuna and other commercial fish populations
The answers can be better understood as given below:
• Due to over-fishing and illegal fishing done by people, the populations of commercial fish such as the Bluefin tuna has been declining.
• People like to catch Bluefin tuna in particular because it is used in making sushi and sashimi, which are considered popular delicacies.
• Because of their popularity, fishermen are motivated to catch them, and hence their numbers are severely affected.
Therefore, the major reason for decline in commercial fish populations is over-fishing and illegal fishing.
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