The article shows the importance of fish resources in the modern world, and also tells how important it is to timely analyze the biological situation in aquaculture. The importance of the issue of ecological monitoring of aquatic biological resources and the living conditions of fish and other aquatic organisms is revealed. The paper describes methods for studying the ecosystem of water bodies, describes technical solutions for creating a digitalized artificial reef, and presents a specific design of an artificial reef adapted to northern conditions, made using additive technologies to achieve a high value of the active surface, which contributes to the development of biocenosis. The main provisions of testing artificial reefs are formulated. The results of experimental tests of the system are presented, on the example of the operation of some sensors, and the development of technical proposals for the modernization of the system is presented.