PRELIMINARY STUDY OF FISH DIVERSITY IN PABEAN BAY, INDRAMAYU Eda Putri Santi 1 . Emmanuel Manangkalangi 2,4 . M. F. Rahardjo 3,4 Abstract Pabean Bay is an estuary waters in which salinity fluctuations oc- cur. This fluctuation requires that the fish living in this location have the abil- ity to adapt. This research is a prelimi- nary study that aims to identify the di- versity of fish species in these waters. The study was conducted from January to June 2015 with sampling at intervals of one month. Fishing was carried out at three stations, namely the inside which is the estuary of the river, the middle part and the outside of the estu- ary to get a representative sample. The fishing gear used are sero, and trammel nets. During the study, it was found that 78 species of fish were included in 39 families. The number of species in each sampling varies. Among the fish found were mainly the family Gobiidae (10 1 Dinas Perikanan dan Pangan, Kabupaten Pesisir Selatan, Jl. Diponegoro No. 76, Painan, 25651, Indonesia; 2 Jurusan Perikanan, Fakultas Perikanan dan Ilmu Kelautan, Universitas Pa- pua, Jl. Gunung Salju Amban, Manokwari, 98312, Indonesia; 3 Departemen Manajemen Sum- berdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Jl. Agatis, Dramaga Bogor, 16128, Indonesia; 4 Masyarakat Iktiologi Indonesia, Gd. Widyasatwaloka, Bi- dang Zoologi, Pusat Penelitian Biologi-LIPI, Jl. Raya Jakarta-Bogor Km 46, Cibinong, 16911, Indonesia E-Mail: e_manangkalangi2013@yahoo.com species) and the Family Leiognathidae, Lutjanidae, Sciaenidae and Tetraodon- tidae (four species each). Several fish species were found in the larval, juve- nile and adult stages, and these condi- tions illustrate the importance of estuar- ies in the survival of the fish life cycle. Keywords: diversity, juvenile, larvae, strictly estuarine species PENDAHULUAN Teluk Pabean adalah muara sungai Ci- manuk yang merupakan salah satu dari tiga sungai besar yang ada di Jawa Barat yang bermuara di Laut Jawa. Sebagai ekosistem estuari, kawasan ini memiliki fluktuasi salinitas yang bervariasi secara spasial dan temporal. Kondisi AQUASAINS (Jurnal Ilmu Perikanan dan Sumberdaya Perairan (Vol 11 No. 1 Tahun 2022)