Fresh data on the timing and speed of the oceanic spawning migration of European eels suggest a new paradigm for spawning ecology.

After 1 week, the mortality of European eel Anguilla anguilla after marking glass eels with oxytetracycline (OTC) and alizarin red (ALC), and farm eels with coded wire tags (CWTs) was 0% within all treatments. The suitability of implanting CWTs in the nose region (tag loss 94% after 1 week) and in the dorsal musculature (tag loss 4% after 1 week) was also examined. # 2005 The Fisheries Society of the British Isles

The growth and mortality of European glass eel Anguilla anguilla 192 days after marking with oxytetracycline and alizarin red S were not significantly different between the two treatments and not different to the unmarked A. anguilla.