Highlight Research:It has been found that many fish died with wounds from farmers in Blitar, Indonesia.The mucosal smear test from mucosal gills of C. carpio infected with Myxobolus.In the blood smear test of C. carpio, there was no myxobolus found in the blood.In gill organ testing using SEM that Myxobolus is found in gills (C. carpio).The shape of Myxobolus resembles an imperfect ball with a hollow in the middle. AbstractThe biggest problem that is often considered to be an obstacle to Common carp culture is the emergence of disease attacks. One type of disease that often attacks the seeds of Cyprinus carpio is Myxobolus (a systemic parasite that can cause harm to fish farming). The aim of this study was to determine the molecular expression through the smear test on C. carpio gills, to determine the image of the gill organs of C. carpio using the SEM test, and to determine the description of the spores of Myxobolus sp. Data were analyzed using descriptive methods. Descriptive method used was comparative descriptive comparing molecular expression in the test of gill mucosal smear of fish using a light microscope and gill organ testing using Scanning Electron Microscope (SEM) on C. carpio infected by Myxobolus sp. In this study, the results showed that in C. carpio infected with true Myxobolus found the presence of Myxobolus in the mucosal smear test and SEM test on gill tissue, but not found in the blood smear test.

The agrocomplex business unit at Bahrul Maghfiroh Islamic Boarding School began to be pioneered for development in the freshwater aquaculture sector from spawning, making pellets / independent feed to processing processed fish products (catfish and tilapia). The potential for higher market demand to meet the needs of fish (catfish and tilapia) in the Malang area is an opportunity for Islamic boarding schools to participate in this section, socially and culturally, students' representations are important exponents in the reality of empowerment, the provision of an entrepreneurial spirit is very much needed in industrial era 4.0, the balance between spiritual and entrepreneurial spirit is a good provision for community application. The cultivation of freshwater fish is emerging developing throughout Indonesia, there are fundamental problems faced by all farmers, one of the drawbacks formulation of fish feed less to optimize the potential of local materials, especially waste and lack of knowledge to formulate feed containing protein, fat, fiber ash and vitamins. At this time, the price of feed used by farmers soared and began to burden the sustainability of the cultivation system. Increasing feed prices and reducing profits or net profits can affect the sustainability of aquaculture, therefore we need a new innovation independent feed movement that has better nutritional and nutritional content at a price that is much more affordable and grows tangible profits. The problems experienced by Bahrul Maghfiroh Islamic boarding school regarding the formula of independent feed in freshwater fish farming can be overcome through the independent feed movement (GEPARI) the application of fish pellet technology by utilizing livestock waste, vegetable waste that has not been optimized. The maximum utilization of this waste can provide significant results because the nutritional and nutrient contents that meet the innovative completed multiple waste concept are solutive, then this problem will be resolved.