~ 170 ~ International Journal of Fisheries and Aquatic Studies 2016; 4(4): 170-172 ISSN: 2347-5129 (ICV-Poland) Impact Value: 5.62 (GIF) Impact Factor: 0.352 IJFAS 2016; 4(4): 170-172 © 2016 IJFAS www.fisheriesjournal.com Received: 21-05-2016 Accepted: 22-06-2016 Kurniawan W Hidayat Department of Aquaculture Bogor Agricultural University, Bogor, Indonesia. Eddy Supriyono Department of Aquaculture Bogor Agricultural University, Bogor, Indonesia. Daniel Djoko Setiyanto Department of Aquaculture Bogor Agricultural University, Bogor, Indonesia. Ani Widiyati National Research Institute for freshwater Aquaculture, Bogor, Indonesia. Correspondence Kurniawan W Hidayat Department of Aquaculture Bogor Agricultural University, Bogor, Indonesia. Effect of three simple design micro-pore aeration on growth and survival of hybrid catfish Pangasius sp Kurniawan W Hidayat, Eddy Supriyono, Daniel Djoko Setiyanto and Ani Widiyati Abstract This present study aimed to evaluate the using of micro-pore diffuser hose to provide proper aeration on hybrid catfish. The diffusers used in this study are two type, stone and micro-pore diffuser hose. The micro-pore hose were made of rubber that compressed and formed like pipe. Micro-pore that used in this experiment made by three shapes, linear (L), circular (Cr), parallel (P), and for control (C) using stone diffuser. Each of them was fitted to the bottom of tank and supplied air by blower with same pressure (90 mbar), all the experiments were carried out in triplicates. Sampling for water quality and growth were collected every 14 days for 60 days fish were reared. The performance of the hybrid catfish was measured by Specific growth rate (SGR), Growth rate (GR), feed intake (FI), survival rate (SR) and Harvest (H). The highest mean SGR was recorded in linear shape (1.58±0.30%), while the lowest recorded in control (1.42±0.24%). Growth rate showed that linear shape gain higher value than other (1.81±0.37 gr/days), while the control showed lowest GR (1.63±0.14 gr/days). The highest feed intake (5772.54±35.27 gr), and the lowest were (2764.30±84.61 gr). Survival rate shows identical result between linear and parallel shape (97.22±4.81%), while the lowest is control (33.33±8.33%), Harvest for linear shape gain highest (6512±59.12 gr) and the control recorded lowest value of harvest (2028±166.83%). Water quality parameter showed that treatment relatively better than control. All the experimented diffuser shows good result for growth hybrid catfish. However, linear shape performed best result among the other. Keywords: hybrid catfish, micro-pore, dissolved oxygen, growth rate, water quality, diffuser 1. Introduction Indonesian native catfish Pangasius djambal or patin jambal are one of commodity that had great economic value in this country, while other Pangasiidae’s family, such as Pangasianodon hypophthalmus (Sauvage, 1878), is dominant species culture in south East Asia specially Thailand and Vietnam [1] . This industry moves rapidly due to wide local and export market [2, 7] . The meat of this omnivorous fish has good texture and taste, so the demand for this product is high [1] . The meat of Patin jambal P. djambal or P. nasutus is white with good texture, but this fish grows relatively slow and less fecund. In other hand, Thai catfish P. hypophthalmus, has good fecundity and growth, but relatively has yellow meat [1] . To solve that problem, researchers went through many ways of experiments; one of that ways was to use additional feed to reduce fat that caused the meat yellowish [4] . The other way that still in improvement is crossbreeds the female P. hypophthalmus with male P. djambal. The result of this crossbreeding called patin pasupati, which inherit good traits from both parents. The meat is white, and this crossbreeding fish grows fast with good fecundity [3] . Although hybrids have positive traits it has negative too, as it’s become intolerant in low DO (dissolved oxygen). Water is life media that is very essential for fish. Water qualities consist of physical, biological and chemical parameters [5] . All factors of water quality affect the growth and development of cultured fish. The success rate of aquaculture production depends on providing good nutrient and convenient environment to support rapid growth and fast turn over period. Water quality affects the general condition of cultured organism as it determines its health and growth conditions. In Aquaculture, the important parameters in water quality are temperature, suspended solids, ammonia, nitrite, carbon dioxide, and dissolved oxygen [6] . However, DO is the most important and critical parameter, due to its requirement to be continuously monitored in aquaculture