Grouper

Grouper

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General

Coral reef fish

Coral reef fish is a term used for the often brightly coloured fish found in tropical or subtropical waters. Many are not commonly sold in Dutch shops and restaurants. Species in this category include parrotfish, snappers, lionfish and surgeonfish.

It is often difficult to determine how these fish were caught. In countries where these species occur, fisheries management is also often insufficient to monitor the stocks properly. Catches are poorly recorded and control of fishing techniques is limited. For example, fishing with explosives and cyanide sometimes takes place on and around coral reefs. This has disastrous ecological consequences for reefs, which are nurseries for the ocean.

The term grouper is a collective name for different species of grouper, such as the red grouper, the Nassau grouper and the black grouper. These species have a stout body and a large mouth. Groupers can reach lengths of up to more than 1 m and weigh up to 100 kilograms. Most species live in shallow sub-tropical and tropical coastal waters on rocky substrates and coral reefs in the western Atlantic Ocean and the Caribbean Sea.

Grouper

Epinephelus spp., Mycteroptera spp.

Origin

Worldwide

Farming- / Catch method

Bottom trawls

Minder tonen Toon beoordeling

Fish stocks and fishing pressure

Ecosystem effects

Fishery management

Final assessment

Explanation assessment

The sensitivity of groupers to fishing pressureFishing pressure:
Fishing pressure is a result of the fishing effort/amount of fishing on a stock, which determines the fishing mortality. Fishing mortality is the share of the fish stock that dies annually as a result of fishing. varies greatly depending on the species. One of the factors that makes groupers sensitive to fishing pressure is spawning in schools. This makes them an easy target for fishermen. Groupers have a high market value and are mostly caught in developing countries by small-scale fishermen.

Groupers are caught in part with bottomBottom trawls:
A fishing technique in which cone-shaped nets terminating in a codend are dragged through the water column or along the bottom. trawls. Since this species is often found in areas with coral reefs, trawling with nets can be very harmful. Nets can snag or catch species that also occur on the reef, such as sea turtles.

Fishery management for groupers is regulated at the national level. Most countries have closed areas and rules for meshMesh size:
Feature of a trawl: the distance between two wires in a triangle-shaped mesh. The mesh-size determines the size of fish caught in the net. size, seasonal or otherwise. Individual management by fishery is mostly lacking. The managementManagement:
The regulations surrounding fisheries and aquaculture that ensure that production is carried out within legal frameworks and that sustainability can be assured. of this species is not effective.

Grouper

General

Coral reef fish

Grouper

Grouper

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