Reproductive Biology of Featherback Fish (Notopterus notopterus Pallas, 1769) from the Sail River, Pekanbaru Regency, Riau Province

Aisya Ayu Rizki, Deni Efizon, Ridwan Manda Putra

Abstract


Featherback fish (Notopterus notopterus) is a type of freshwater fish that inhabit the Sail River, Riau Province. To understand the reproductive biology of this fish, a study has been conducted from March to April 2017. Total fish captured was 70 (34 males and 36 females). Sex ratio between male and female was 1 : 1. The gonado somatic index (GSI) of the male was 0.06-0.78 % and that of the female was 0.05%-6.78%. The fecundity of the fish were 1.630-5.526 eggs/fish. Egg diameter was 1.8 mm-2.5 mm. The relationship between fecundity and standard lenght was y = 3.11x - 4.06, that of the fecundity and body weight was y = 1.86x-0.86, and that of the fecundity and ovary weight was y = 0.81x+2.66. The water quality parameter are as follows : temperature 28-300C, transparency 5.5-15.5 cm, depth 0.7-1.87 cm, pH 6, DO 2.4-4 mg/L, and CO2 11.9-19.9 mg/L.
Keyword : Notopterus notopterus, Sail River, GSI, fecundity, and eggs diameter


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