FORMING OF BEHAVIOR FEATURES IN ROACH FRYRutilus rutilus (Linnaeus, 1758) (CYPRINIDAE) IN EARLY ONTOGENESIS
The features of roach fingerlings behavior, grown in environments with different levels of information en- richment (feeding live food organisms or immobilized, the presence or absence of a predator, the presence of the flow) was investigated. Exploratory behavior and locomotor activity of juveniles using tests “circular hall” and “open field” was studied. Also in hydrodynamic tray ability of fish produced in different growing conditions swimming was estimated. In addition, food and defensive behavior of fish it was investigated. It is shown that the majority of behavioral indicators, juvenile roach, grown in the presence of predators, significantly ( p <0.05) different from the other experimental groups. At the same time, the differences were positive and contributed to a better adaptability of fish to subsequent influences of the environment.