Definition of glass eel in English:

glass eel

noun

  • An elver at the time that it first enters brackish or fresh water, when it is translucent.

    • ‘Coloration is variable with maturity level, the larval stage is called a leptocephalus, or glass eel.’
    • ‘They change into glass eels which are see through and one can see the internal organs of the fish.’
    • ‘For instance, limits will be set on fishing for glass eels used in aquaculture, while eel passes, similar to salmon ladders, are to be introduced to lessen the impact of dams and weirs that block upstream migration.’
    • ‘Fishing for glass eel could also continue if these eels are used for restocking rivers but not used for aquaculture.’