Fecundity estimation was made using a
gravimetric method (Tarnchalanukit et al., 1986).
Newly hatched larvae of Siamese gourami were
produced by induced spawning using chemical
njection (Suprefact and Motilium). The injection
was done using Suprefact 15 µg/kg and Motilium
5 mg/kg. For male and female brooders, the
njection was done once. The sexually mature fish
were cultured in fiber-glass tank (water volume
300 liters) with stocking density of 10 fishes/m2
.