BEBERAPA ASPEK BIOLOGI IKAN SWANGGI (Priacanthus tayenus) YANG DIDARATKAN DI PPP TAWANG KABUPATEN KENDAL
Authors: Agustiari Arinta Maulidina , Saputra Suradi Wijaya , Solichin Anhar 
Published: September 2020

ABSTRAK Pelabuhan Perikanan Pantai Tawang merupakan pelabuhan yang cukup besar di Kabupaten Kendal. Salah satu hasil tangkapan yang didaratkan yaitu ikan Swanggi (Priacanthus tayenus) merupakan jenis ikan demersal dengan karakteristik khusus berwarna merah muda, memiliki mata besar dan pada sirip perutnya terdapat bintik berwarna kehitam-hitaman. Tujuan penelitian ini adalah mengetahui aspek biologi ikan Swanggi meliputi struktur ukuran, hubungan panjang berat, faktor kondisi (Kn), ukuran pertama kali tertangkap (Lc50%), ukuran pertama kali matang gonad (Lm50%), tingkat kematangan gonad (TKG), indeks kematangan gonad (IKG), diameter telur, fekunditas dan upaya pengelolaan sumberdaya ikan Swanggi (Priacanthus tayenus). Penelitian dilaksanakan pada bulan Maret – April 2016. Metode penelitian adalah survei. Pengambilan sampel menggunakan metode random sampling atau acak. Hasil penelitian dilakukan pada ikan Swanggi sebanyak 625 ekor, pertumbuhan ikan Swanggi bersifat allometrik negatif dengan persamaan W = 0,00045L2,30701. Panjang ikan yang tertangkap selama penelitian berkisar antara 105 – 324 mm dan  berat berkisar antara 22 – 205,2 gram. Nilai faktor kondisi adalah 1,106. Nilai Ukuran pertama kali tertangkap (Lc50%) adalah 152 mm.Ukuran pertama kali matang gonad (Lm50%) yaitu 153 mm. Ikan Swanggi jantan maupun betina sebagian besar belum matang gonad. Nilai TKG yang semakin tinggi akan diikuti dengan tingginya nilai IKG dan diameter telur juga semakin besar. Fekunditas tertinggi sebesar 245303 butir. Hubungan fekunditas terhadap panjang dan berat ikan Swanggi menunjukkan koefisien korelasi lemah. Kata Kunci : Ikan Swanggi  (Priacanthus tayenus), Aspek Biologi, PPP Tawang  ABSTRACT Tawang Coastal Fishing Port is a huge port in Kendal Regency. One of its hauls which was landed is Red Bigeye fish (Priacanthus tayenus). Which include in demersal fish with special characters; they have pink color, big eyes, and black spots around their pelvic fins. The purpose of this research is to find out the biological aspect of Red Bigeye fish from several aspects, i.e. size of the structure, relation of length and weight, the conditions factor (Kn), the size of the first caught (Lc50% ), the first time size of gonad maturity (Lm50%), gonad maturity level (TKG), index of gonad maturity (IKG), diameter of egg, fecundity, and management effort of Red Bigeye fish (Priacanthus tayenus) resources. The research was conducted in March – April 2016. The method used in this research is survey. In taking sample, this research use random sampling method. The result was done on 625 Swanggi fish. The growth of Red Bigeye fish is negative allometric with equation W = 0,00045L2,30701. The length of caught fish for the research are around 105 - 324 mm and weight around 22 – 205,2 gram. The value of condition factor is 1,106. The value of first time caught is 152 mm. The value of first time mature gonad (Lm50%) is 153 mm. Most male and female Red Bigeye fish are immature gonads. The higher TKG value will be followed by the higher IKG and egg diameter will be bigger. The highest fecundity is 245303 grain. The fecundity relation toward the weight of Red Bigeye fish shows weak correlation coefficient. Keywords : Swanggi Fish (Priacanthus tayenus), Biological Aspect, Tawang Coastal Fishing Port