Efforts to protect giant clams from extinction one of them through conservation, which set a region as a restocking area. The research aimed to analyze the suitability environments with the density giant clams in the aquatic. The research conducted in September 2013-January 2014. The research site was determined by purposive sampling of middle inner zone = MIZ, middle outer zone = MOZ, and outer zone = OZ in the aquatic of Spermonde Archipelago. The research conducted was using observation method of biology, physics, and chemistry parameters of aquatic at mintakat reef flats, reef slope and reef base. Data analysis of location suitability of restocking giant clams using WSM method (and correlation analysis of giant clams density with water quality, then integrated with ALOS Avnir-2 image. The result research shows the density giant clams influenced by the physical environment parameters, mainly salinity, brightness and depth. The suitability location of restocking giant clams for class Very suitable in P. Langkadea and P. Pala (MOZ), P. Cangke (OZ), P. Tambakulu and P. Kondongbali (OZ) on mintakat reef flats. Class Very suitability on reef slope in P. Kondongbali and P. Kapoposang (OZ). Class accordance with the reef flats, there are P. Podang Podang Lompo (MOZ), P. Sarappo Keke (OZ) and P. Kapoposang (OZ). Class Appropriate to reef slope mintakat in P. Langkadea (MOZ) and P. Sarappo Keke (OZ). Determination of giant clams restocking area in nature needs considers the location suitability, primarily the quality of aquatic physics.  Keywords: conservation, clam, weight sum model, ALOS Avnir-2 image

Identifikasi morfologi sebagai alternatif identifikasi jenis kelamin siput gonggong tanpa merusak cangkang dan viscera. Penelitian bertujuan untuk mengidentifikasi jenis kelamin siput gonggong Strombus sp. secara morfologi. Sampel diperoleh dari nelayan pengumpul di pesisir Madung, Tanjungpinang, Indonesia. Sampel dikoleksi pada saat surut terendah, hasil koleksi disimpan dalam wadah ember. Siput gonggong jenis kelamin jantan dan betina dibedakan secara morfologi melalui pengamatan visual terhadap cangkang tanpa pembedaan organ bagian dalam cangkang. Organ reproduksi diketahui dengan cara mengeluarkan keseluruhan daging dengan memecahkan cangkang. Panjang cangkang diukur menggunakan kaliper dengan ketelitian 0,01 mm. Panjang cangkang adalah jarak dari ujung anterior ke ujung posterior cangkang. Rasio jenis kelamin siput gonggong dianalisis dengan metode chi-square. Data yang diperoleh dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa siput gonggong yang ditemukan adalah jenis Strombus canarium dan Strombus sp. dari total sampel sebanyak 1124 individu. Jenis kelamin siput gonggong dapat ditentukan secara morfologi berdasarkan kemontokan cangkang (lebar dan langsing). Bentuk cangkang lebar menandakan siput gonggong jenis kelamin betina, bentuk cangkang langsing menandakan siput gonggong jenis kelamin jantan. Nisbah kelamin siput gonggong jenis S. canarium dan Strombus sp. jantan dan betina dalam  rasio berbeda.

Length-weight relationship (LWR) species Epinephelus fuscoguttatus Forsskål, 1775 by gender (male and female) were collected from September 2016 to June 2017 in Bobong Taliabu waters, North Maluku, Indonesia. Fish captured using bottom trap, size 80 x 60 x 35 cm with mesh size 5 cm. LWRs of significant male and female E. fuscoguttatus (P<0.05) were calculated as W = 0.0098 L 3.1475 (r 2 = 0.9252), W = 0.0752 L 2.5030 (r 2 = 0.9029), and W = 0.9987 L 1.6789 (r 2 = 0.9093) for both. This study recorded the new maximum length by sex of E. fuscoguttatus.

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