Abstract
The reproductive biology of marine teleost, Limanda limanda has been studied. The fish fully mature in February - March had high. GSI value, which gradually decreased in April to July. Low temperature corresponded high value of GSI. Ovaries of larger females increased in weight earlier than those of smaller fish. Condition factor (k) showed no significant variation. Six development stages of eggs have been described: immature, developing immature, developing (early), developing late, ripe and spent. Monthly changes in size, frequency and distribution of oocytes were calculated. Primary oocytes were 30-70 mu m and mature eggs were of 350-400 mu m. Primary oocytes were present throughout the year.