Growth characteristics and reproductive biology of Denison barb (Puntius denisonii)
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Abstract
The aim of this study was to determine the growth and reproductive characteristics of Denison Barb in captive conditions. The experiment was conducted from July to December 2023. The results showed a strong correlation between length and weight, with the equation W = 0.0159 L2.7987 and a correlation coefficient of R2 = 0.9874. The value of b, which was below 3, indicates a negative allometric growth. The Fulton index ranged from 0.91 - 1.16% for males and 1.09 - 1.40% for females. The gonadosomatic index (GSI) ranged from 2.57 - 7.79% for males and 2.85 - 10.94% for females. The eggs were adhesive, with a light yellow to brown yellow color and spherical in shape. They hatched within 34 - 36 h at a temperature of 28 ± 0.5oC. The egg diameter ranged from 1,286 - 1,510 µm. Absolute fecundity which ranged from 229 - 581 eggs/female in 9 - 10 cm length group and ranged from 457 - 1,058 eggs/female in 11 - 12 cm length group. Relative fecundity ranged from 19 - 43 eggs/gfemale in 9 - 10 cm length group and ranged from 32 - 56 eggs/g female in 11 - 12 cm length group. These results indicate that Denison Barb can sexually mature and reproduce successfully in captivity.
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References
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