Determine of some of biometry and fecundity indicators in female Khramulia (Capoeta capoeta gracilis Keyserling 1861) in the Sefidroud River

Khramulia (Capoeta capoeta gracilis) is one of the semi economically valuable fishes in the rivers. This fish is a potamodoromous and spawning in rivers. The study of fecundity and biometry are one of the important indicators of reproduction biology in fishes. The present study was conducted in the spring of 2010 on 36 Khramulia specimens caught from each of 2, 3 and 4 years, the Sefidroud River to investigate fecundity and biometry in this species. According to surveyed average of total length was 195.5±22.13mm (152-256 mm), average of fork length was 182.19±20.98mm (144-238mm), average of standard length was 168.38± 19.62mm (130-220mm), average of weight 85.11g (40.1-165.3), average of gonad weight 2.23±0.98g (0.52-4.60g), average of absolute fecundity 1572.60±759.38 eggs (605.55-3901.28 eggs), average of relative fecundity 19.51±9.68 (8.77-57.27), average of egg number 77.74±38.82g (22.6-263.7g) average of egg diameter 1.16ml (0.98-2.23mm) and gonado-somatic index (GSI) 2.63% (0.9-4.9%). Maximum average absolute fecundity (2355.27± 699.64 eggs) belonged to 4 year old Khramulia specimens and maximum average relative fecundity (22.5±12.9) belonged to 2 year old Khramulia specimens. Among different age groups of fish were significant difference in mean of total length, fork length, standard length, weight, gonad weight, egg number, absolute fecundity, relative fecundity (P0.05). While it was not significant difference egg diameter and gonadosomatic index between these female broods (P> 0.05).