Answer:
1. Aquaculture : raising fish in an artificial controlled environment
2. By-catch : the unwanted fish inadvertently caught in the process of fishing, often discarded
3. Drift net fishing : fishing technique that involves dragging long nets behind a boat and bringing in huge numbers of fish
4. Long-lining : fishing technique that involves the use of long lines of baited hooks
5. Purse-seine fishing : fishing method that involves spotting a large school of fish, and then trapping them with a net
6. Trawling : fishing method that involves sending a giant scooping net to the ocean floor and bringing up everything it can
Step-by-step explanation:
1. Aquaculture or aqua-farming is the process of raising fishes in an artificial controlled environment, a contrast to commercial fish farming.
2. By-catch are the unwanted fishes that are inadvertently caught in the process of fishing, and are often discarded.
3. Drift net fishing is a fishing technique that involves dragging long nets behind a boat and bringing in huge numbers of fish, without the need to anchor the nets to the bottom.
4. Long-lining is a form of fishing technique that involves the use of long lines of baited hooks, attached at intervals. It is mostly a commercial technique of fishing.
5. Purse-seine fishing is a fishing method that involves spotting a large school of fish, and then trapping them with a net called a seine. The nets hang vertically in the water while the bottom is held by weights.
6. Trawling is a fishing method that involves sending a giant scooping net to the ocean floor and bringing up everything it can to one or more boats.