More information


Quality mark Cultivation
/Keurmerk Wild
Second choice
Informatie over vissoort
Lees meer


Perchids (Perciformes)  is by far the largest family of fishes and comprise more than 41% of all vertebrate fish. Perchids occur in either fresh and saltwater areas all over the world. Well-known perchids are seabass, dorado, mahi-mahi and weever.


Escolar is also known as snake mackerel and sometimes sold as butterfish or white tuna. This species occurs in southern waters, mainly the Indian Ocean and around southern Africa and is caught at great depths as bycatch in tuna fisheries. World’s largest escolar supplier is Namibia.

This species looks like a large mackerel because of is long body form. Escolar has an average size of 1,5 meters and weighs on average 13 kg. In the Netherlands, escolar is mainly sold smokes or filleted. This species lives in deep waters, at 200-885 meters depth. This species has a slow reproduction rate which makes him vulnerable for overfishing.

Escolar has a high fat content (gempylotoxines) which are hard to digest. Even though it is not poisonous, consumption of gempylotoxines can lead to stomach ache and diarrhea. A good alternative to escolar is catfish.




Lepidocybium flavobrunneum


Farming- / Catch method

Pelagic longlines

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
Fish stocks and fishing pressure
Ecosystem effects
Fishery management
Final assessment
Explanation assessment

Escolar is maximally fished and is therefore under a large 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.

This species is bycatchBycatch:
Species caught next to species targeted for fishery. By-catches can consist of non-commercial species and species that are too small, and can be kept (this part is sometimes called by-product) or thrown back into the sea (discards). 
in the longlineLongline:
Also known as line fishing. A fishing method in which lines and hooks are used.
fishery on tuna. Besides the bycatch of escolar, different species such as; sharks, young swordfish, undersized tuna, but also endangered birds, seaturtles and small cetaceans are caught as bycatch. The bycatch often does not survive the pressure and temperature differences when hauled in.

The fishery on escolar is not managed, in part because of the lack of a reliable stock-assessmentStock assessment:
Based on data about fish catch of fishermen and samples conducted with research vessels, a stock assessment describes the current and former status of a fishery stock. The size of the stock will be measured and a prediction will be made about how the stock will respond to management measures.

Fish in season 

Fish is in season when the spawning period has ended, as the quality is then at its best.


ASC label

Fish with the ASC label is farmed in a sustainable manner.

MSC label

Fish with the MSC label is caught sustainably.

Good fish

This fish is not being overfished or is being responsibly farmed, with minimal impact on the environment.

Second choice

This fish is a second choice. There are still some improvements to be made in this fishery or fish farm.


Do not buy this fish. It's being overfished or the way it's farmed or caught has a negative impact on the environment.


There is fish available of this species that is farmed or caught using high welfare standards.


GlobalG.A.P. certified farms are doing a step in the right direction in terms of sustainability. A few species with this label are getting a better score on the VISwijzer.


Organic standards are the strictest when it comes to fish feed. They also require certain measures for animal well-being.