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