Authors : Paulo Rema and Ant?nio Gouveia
Abstract: A growth trial was performed to evaluate to what extent density of fish affect growth and survival of goldfish larvae (Carassius auratus). A total of 5100 larvae (mean initial weight: 0.9 mg) were randomly distributed in a recirculating water system constituting 15 groups of 200, 250, 300, 350 and 400 individuals each in 5 L tanks. All treatments were carried out in triplicate and a fasted group was used as control. The trial lasted 21 days and a microparticulate diet was delivered by automatic feed dispenser. At the end of the trial high survival and growth rates were observed in all treatments. There were no significant differences in total length and total weight among treatments. Considering the high survival rate of goldfish larvae obtained this study it can be concluded that growth of goldfish larvae is independent of the stock density when varying between 40 and 80 larvae L-1.
Paulo Rema and Ant?nio Gouveia , 2005. Growth and Survival of Goldfish (Carassius Auratus) Larvae Reared at Different Densities . Journal of Animal and Veterinary Advances, 4: 274-275.