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Background: Giant gourami (Osphronemus goramy Lacepede, 1801) has become popular aquaculture in Indonesia. However, information on the feed used is minimal. This study analyzed the change in feeding nutrition, fish growth, feed efficiency, and body-carcass using product formulated from water coconut, palm sap sugar, and fungus. Methods: A total of 2,000 ml coconut water and 1,000 ml of palm sap sugar solution were formulated. Each product formulated was added with 6 g of Aspergillus niger (called product P1), 6 g of Rhizopus oligosporus (called product P2), and 6 g of Saccharomyces cerevisiae (called product P3). Commercial feeds supplemented with P1, P2, and P3 products are designated P1, P2, and P3 diets. Commercial feed added to freshwater is called the P4 diet (placebo). Their dosage is 300 ml/kg of feed. Gurami sago juveniles (initial weight 50±2.5 g and length 13.2±0.4 cm) were stocked in triplicate nets (2×1×1 m) in a freshwater concrete pond with a stocking density of 30 fish/net, an initial feeding rate of 3% per day until study termination. Results: Our results support our hypothesis that different product formulations have a significant effect (p<0.05) on growth performance and feed efficiency. At the same time, supplementing commercial feed with varying formula products has a significant impact (p<0.05) on the fatty acid composition of the diets and carcass body of gurami sago. Conclusion: Diet P2 contains a higher concentration of fatty acids to increase body weight, feed efficiency, and the best carcass fatty acid composition than other experiments for sago gurami reared in freshwater concrete ponds.

Bagridae is one of the important Background: Hemibagrus wyckii economic fish species that lives in the rivers and reservoir in Riau Province, Indonesia. The present study aimed to determine the reproductive performance of under culture conditions. H.wyckii : A total of 10 female and 10 male fish were selected, and weight, Method s length, characteristics of egg and sperm, and hatchery performance were measured. Eggs were fertilized using the dry method. Egg weight and egg diameters were measured for 50 eggs per female. Egg size (50 eggs for each fish) was measured using Labo microscope model L-711 using software camera 3. Then, saline solution was added over the eggs, followed by the addition of pooled sperm from 10 males.Average relative fecundity, egg weight and egg diameter were Results: 2060±512 eggs/kg fish, 29.86±1.21 mg and 2.67±0.26 mm, respectively. The fertilization rate and hatching rate were 60.91±4.68% and 42.91±2.92% respectively. Sperm characteristics such as volume per fish (mL), pH, concentration (per mL), motility (%) and duration of motility (second) were 0.82±0.20, 7.15±0.12, 3.68±0.15, 72.77±1.46 and 47.5±4.84, respectively.The study results and scientific observations regarding Conclusion: reproductive performance suggest that can be considered a new H. wyckii candidate species for aquaculture.

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