Ikan layang (Decapterus sp.) merupakan ikan pelagis kecil yang termasuk dalam komoditas ekonomis paling penting di Kota Tarakan. Ikan Layang yang memiliki harga penjualan di pasar lokal yang berada di pasar tradisional Beringin, Kota Tarakan sebesar Rp. 20.000-25.000 perkilogram. Tujuan penelitian untuk menganalisis indeks kondisi dan pertumbuhan pada ikan layang yang didaratkan dipasar tradisional Beringin Kota Tarakan. Metode yang digunakan deskriptif kuantitatif. Penelitian selama 3 bulan dari bulan Juli-September 2022. Objek penelitian Ikan layang yang diukur berupa panjang total, berat total, dan indeks kondisi. Hasil penelitian pola pertumbuhan ikan layang jantan dan betina memiliki nilai b

One of the key exports from Tarakan City is the little pelagic fish known as the mackerel scad (Decapterus sp.). At the Beringin Traditional Market in Tarakan City, mackerel scads are sold for between 20,000 and 25,000 IDR per kilogram The study’s objective was to evaluate the health and growth rate of mackerel scad landed at Tarakan City’s Beringin Tradisional Market. This study emproyed a quantitative descriptive approach. From July to September 2022, 3 months were devoted to the study. Total length, total weight, and condition index were measured as research variabels for mackerel scad, the equations y= 1,3821x-0,1501 and y= 1,331x-0,056 had values of b3 (allometric negative), which indicated that length growth was outpacing weight increase. Male mackerel scad had a body condition index of thinness of 69,6%, fatness of 48,0%, and female mackerel scad had a body condition index of thinness of 53,2% fatness of 40,6%.