PENGARUH TEKNOLOGI FINE BUBBLE TERHADAP PEMBESARAN IKAN HIAS GOLDEN (Puntius denisonii) DENGAN DENSITAS BERBEDA

Abstract

Golden ornamental fish (Puntius denisonii) is a high-value freshwater ornamental commodity with continuously increasing market demand, which encourages intensive grow-out at high stocking densities. Increasing the stocking density is often accompanied by a decline in water quality, particularly dissolved oxygen, which affects fish growth and survival. This study aimed to analyze the effect of fine bubble technology on water quality, growth, survival, and business feasibility of golden ornamental fish grow-out at different stocking densities. The study employed a one-factor Completely Randomized Design with three stocking density treatments, namely 50, 70, and 90 fish/aquarium, each with three replicates, reared for one month with the support of fine bubble technology, ad satiation feeding using silk worms, and periodic water exchange. The data were analyzed using analysis of variance (ANOVA) followed by Tukey's test, while business feasibility was analyzed descriptively. The results showed that water quality remained within a suitable range across all treatments. The 90 fish stocking density treatment exhibited the best performance, with the highest survival rate, optimal growth, the best feed efficiency, as well as the highest business profit and profit percentage. Therefore, fine bubble technology was proven effective in supporting the grow-out of golden ornamental fish at high stocking densities and economically feasible for improving the efficiency and sustainability of freshwater ornamental fish culture.

Ikan hias golden (Puntius denisonii) merupakan komoditas ikan hias air tawar bernilai ekonomi tinggi yang permintaannya terus meningkat, sehingga mendorong pembesaran secara intensif dengan kepadatan tebar tinggi. Peningkatan kepadatan sering diikuti penurunan kualitas air, terutama oksigen terlarut, yang berdampak pada pertumbuhan dan kelangsungan hidup ikan. Penelitian ini bertujuan menganalisis pengaruh teknologi fine bubble terhadap kualitas air, pertumbuhan, kelangsungan hidup, dan kelayakan usaha pembesaran ikan hias golden pada kepadatan tebar yang berbeda. Penelitian menggunakan Rancangan Acak Lengkap satu faktor dengan tiga perlakuan kepadatan tebar, yaitu 50, 70, dan 90 ekor/akuarium, masing-masing tiga ulangan, yang dipelihara selama satu bulan dengan dukungan teknologi fine bubble, pemberian pakan cacing sutra secara ad satiation, dan pergantian air berkala. Data dianalisis menggunakan analisis ragam (ANOVA) dan uji lanjut Tukey, sedangkan kelayakan usaha dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa kualitas air tetap berada pada kisaran yang layak di seluruh perlakuan. Perlakuan kepadatan 90 ekor menunjukkan performa terbaik dengan tingkat kelangsungan hidup tertinggi, pertumbuhan optimal, efisiensi pakan terbaik, sekaligus keuntungan usaha dan persentase laba tertinggi. Dengan demikian, teknologi fine bubble terbukti efektif mendukung pembesaran ikan hias golden pada kepadatan tebar tinggi serta layak secara ekonomi untuk meningkatkan efisiensi dan keberlanjutan budidaya ikan hias air tawar.