KONINKLIJKE ACADEMIE VOOR OVERZEESE WETENSCHAPPEN ...

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— The fish biological characteristics including fish nutrition, fish growth and
reproductive biology;
— The maturity period of the broodstock maintained in pond;
— The possibility of artificial propagation by using different hormone stimulations;
— The possibility of rearing fingerlings and promoting intensive growing-out in
earthen ponds;
— The household income for farmers in the Mekong Delta.
The results were very good and climbing perch is now one of the most important
cultured fish in almost all the provinces in the Mekong Delta, south of
Vietnam.
2.1. E x pe r im e n t a l M a te r ia ls
2.1.2. Site for Research Activities
2. Materials and Methods
Research was conducted at the experimental fish hatchery station, Department
of Freshwater Aquaculture, College of Aquaculture and Fisheries Sciences, Can
Tho University, with the help of the Unité de Recherche en Biologie des
Organismes (URBO), Facultés Universitaires Notre-Dame de la Paix (FUNDP,
Namur, Belgium) and in partnership with the cooperative farmers in Long an,
Can Tho, Kien Giang, An Giang, Dong Thap and Vinh Long provinces in the
Mekong Delta. The research on artificial propagation and intensive culture of
climbing perch includes three steps: three main experiments.
2.1.2.1. Experiment 1: Artificial Propagation of Climbing Perch
— Climbing Perch Brood Stock Culture for Maturation
A wild brood stock of climbing perch was collected from An Bien district,
Kiengiang, An Giang and Can Tho provinces. Seven to ten fish/kg were cultured
in plastic cages of 2 x 2.5 x 2 m, at stocking density of 5 kg/m3. The brood stock
was fed with 30-32 % protein food at a feeding rate of 1.5-2 % of total fish body
weight per day.
— Artificial Propagation of Fish
Hormones as Human Chorionic Gonadotropin (HCG), Lutein Releasing
Hormone (LHRHa) + Domperidon (DOM) and pituitary gland of common carp
(one unit of pituitary common carp = 0.05 mg) were used at different concentration
levels (tab. 1) to produce eggs of climbing perch (K ie m 1999).
Only one injection of hormones was used to stimulate artificial spawning, but
the concentration levels of hormones for male were equal to 1/2 to 1/3 hormone
concentration level for female. Male and female ratio was 1:1.