The Technique of Directing the Sex of Betta Fish (Betta Sp.) Larval Stage (H3, H5, and H7) using Coconut Water (Cocos Nucifera)

Abstract

Betta (Betta sp.) is an anabantidae fish with sexual development that can be directed at the embryonic and larval stages. One way to direct the sex development of these fish is by using hormone therapy using natural ingredients. Coconut water is one of the natural ingredients that can be used because it contains high potassium. This potassium can convert cholesterol in fish body tissue to pregnenolone which will affect the increase in testosterone production. This study aims to determine the best dose and age group in directing the sex of Betta fish experimentally using a randomized block design (RBD) with 4 treatments and 3 replications. The immersion treatment of larvae in the age group of 3 days, 5 days, and 7 days for 15 hours with a dose of 0%, 10%, 20%, and 30% coconut water was carried out in a 3 L jar containing 30 larvae. The results showed that coconut water was able to influence the increase in the percentage of male betta fish (P <0.05) with the highest value at a dose of 30% as much as 86.26 ± 8.34% and the 3 day larvae age group of 72.78 ± 16.03, and have a different effect on other treatments. In addition, the survival calculated after immersion shows a value of 100%, meaning that coconut water does not have a harmful effect on fish. Based on the results of this study, the best treatment for directing the sex of betta fish is a dose of 30% coconut water with the 3 day age group

The Effects of Different Dosages of Pasak Bumi (Eurycoma longifolia Jack) towards The Sex of Betta Fish Embryo

“…Good water quality if the water quality parameters are in accordance with the biological needs of fish or within the tolerance limits needed for fish to live and grow optimally so that they can support the success of an aquaculture business [18]. The temperature and dissolved oxygen obtained during the study still support fish life where temperatures of 24-28 0C and DO > 3 mg/L are suitable in the maintenance of betta fish and sex direction in betta fish [5]; [27]. The pH of the water in the rearing container still supports the life of the fish that are kept, a pH ranging from 6-7 is a suitable pH in the maintenance of betta fish and the success of maleization in betta fish [6]; [28]; [29]; [27].…”

“…The price of male betta fish is higher than female betta fish [1]; [2] because the advantages possessed by male fish, including striking body color and long fins and body size that is slimmer and smaller than female betta. provide the aesthetic value of the fish [3]; [4]; [5]. Thus, there is a need for efforts to obtain a male monosex population using the masculinization method [6]; [1]; [5].…”

“…provide the aesthetic value of the fish [3]; [4]; [5]. Thus, there is a need for efforts to obtain a male monosex population using the masculinization method [6]; [1]; [5].…”

“…Several studies have shown that the male sex ratio of Betta splendens can be increased by using natural ingredients. Natural ingredients such as coconut water can increase up to 86.26±8.34% male IOP Publishing doi:10.1088/1755-1315/1118/1/012005 2 sex ratio [5], honey can increase 93-96% [1]; 77, 33% [7] and 85-100% male sex ratio [3]. Other natural ingredients such as celery leaves can increase the sex ratio greater than 50% [8] and purwoceng extract can increase the sex ratio percentage up to 62.66% [6].…”