Penelitian tentang hubungan panjang berat dan faktor kondisi Anadara granosa telah dilakukan di Perairan Tanjung Buka. Penelitian ini dilakukan pada bulan Oktober – Desember 2020. Analisa hubungan panjang berat menggunakan persamaan W = aLb. Analisa faktor kondisi menggunakan persamaan CF = W/Wp. Sampel yang diukur sebanyak 500 individu. Hasil penelitian menunjukkan persamaan hubungan panjang berat kerang darah dengan persamaan W = 5,61.L2,79 R2 = 0,8. Hasil uji t menunjukan bahwa nilai b?3. Hal ini menunjukkan bahwa pertumbuhan kerang darah bersifar allometrik negatif. Nilai faktor kondisi kerang darah berkisar antara 0,6 – 1,8 dengan rata rata 1,0. Nilai ini menunjukkan bahwa kondisi lingkungan masih mendukung hidup, serta tersedia makanan yang cukup bagi kerang darah.
Kata Kunci: Anadara granosa, Faktor Kondisi, Hubungan Panjang Berat

A research on the length-weight relationship and condition factors of Anadara granosa was conducted from October to December 2020 in Tanjung Buka waters, Bulungan Regency. The length-weight relationship analysed with formula by Pauly: W = aLb. Condition factor analysed with formula CF = W/Wp. The samples measured were 500 individuals. The results showed that the equation of the length-weight relationship of A. granosa was W = 5.61.L2.79; R2 = 0.8. The results of the t-test on the value of b show that the value of b?3. The growth pattern was negative allometric. A condition factor of A. granosa ranged from 0.6 to 1.8 with an average of 1.0 this value indicated that the condition of A. granosa was morphologically good and supported by a healthy environment. Keywords: Anadara granosa, Condition Factors, Length-weight relationship