In Eropa, glass eels found from October up to April, and consumtion found from Juni up to September. In America.glass eels found from juny up to October, and consumtion found from November up to Mei. Abundance of the glass eels, and consumtion every month also distinguish
Like in Eropa, and America, season eels in Indonesia distinguished, too. In Pelabuhan Ratu glass eels found from October up to Mart and abundance in January. Whereas, consumtion from April up to September. In Poso Gulf, season of glass eels occured from April up to October, and abundance at Juny. Whereas, consumtion found from Nopember up to Mart.
In Cilacap glass eels found from Juny up to August, consumtion from October up to Desember. In Kebumen glass eels found from January up to May. In Purwokerto from Nopember up to December. In Kulonprogo from May up to July. Distinguishing season guessed by time of spawn in Hindia Ocean, and Pacific Ocean distinguished. Another, it caused by species distinguished.
Glass eels that catched in a month at same in size. Guessed, glass eels that catched original from same broodstock. After spawn, broodstock dead. Glass eels that appear in past month have to migrate to reach of rivers. Another, spawning eels occur every six months, but depend of where ocean eels spawn are.