Abstract
Ornamental fish is a potential commodity because it has its own charm. One of the ornamental fish that currently has a lot of interest is Cupang fish (Betta sp.). Cupang fish at the seed stage really need good and quality feed to support success during cultivation. The purpose of this study was to analyze the effect of different natural feeds on the growth and survival of Cupang fish fry (Betta sp.) and to determine the best type of natural food for Cupang fish survival and growth. This study used a completely randomized design (RAL) with 3 treatments and 3 replications. Parameters observed were absolute weight growth, absolute length growth, specific growth rate, and survival rate. The results showed that different natural feeds had a significant effect on absolute weight growth, absolute length growth, and specific growth rates, while different natural feeds had no significant effect on Cupang seed survival. Furthermore, giving silkworms (Tubifex sp.) is the best natural food compared to water fleas (Moina sp.) and mosquito larvae (Culex sp.,) for the growth of Cupang fish seeds during maintenance.
Highlights
Ornamental fish is a potential commodity because it has its own charm
The results showed that different natural feeds had a significant effect on absolute weight growth, absolute length growth, and specific growth rates, while different natural feeds had no significant effect on Cupang seed survival
FA., Fikri, A., Rasuldi, R., Wilianti, splendens di habitat buatan
Summary
Pakan alami adalah makanan hidup dahulu selama 1-2 hari setelah itu barulah bagi larva atau benih ikan dan udang. Pakan alami diberikan kepada benih untuk pertumbuhan dan perkembanganya cupang dengan metode ad libitum dengan diperoleh dari berbagai jenis pakan yang tujuan agar pakan selalu tersedia sehingga berbeda (Febri, 2016). Ada beberapa pakan alami yang biasa diberikan pada ikan cupang yaitu kutu air (Moina sp.), Perhitungan pertumbuhan bobot mutlak menggunakan rumus Effendie (2006) dalam Febri (2020), sebagai berikut:. W = Wt – W0 Keterangan: W = Pertumbuhan bobot mutlak (g) Wt = Bobot ikan akhir penelitian (g) W0 = Bobot ikan awal penelitian (g) larva nyamuk (Culex sp.), dan cacing sutera Pertumbuhan Panjang Mutlak (Tubifex sp.). L = Lt – L0 Keterangan: L = Pertumbuhan panjang mutlak (cm) Lt = Panjang ikan akhir penelitian (cm) L0 = Panjang ikan awal penelitian (cm). Laju Pertumbuhan Spesifik Laju pertumbuhan spesifik dihitung menggunakan rumus zonneveld (1991) dalam Febri (2020), sebagai berikut: HASIL DAN PEMBAHASAN Pertumbuhan Bobot Mutlak
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