When choosing individuals, pay attention to their activity and the absence of visible damage, such as ulcers, fin rot, or whitish spots on the body. Avoid fish with sunken bellies or unnaturally bloated abdomens, as this may indicate internal diseases. Given the high territoriality and aggressiveness of the species, it is recommended to acquire young individuals so that they can adapt to aquarium conditions together, or to select a group with the correct sex ratio (there should be 3-8 females per male). — Assess behavior: healthy fish show curiosity and swim actively, avoiding individuals that hide in corners or show signs of apathy. — Check the clarity of coloration: in young individuals and females, the pattern should be clear, without signs of paleness or stress spots. — Clarify the keeping conditions in the store: it is important that the fish are in an aquarium with a sufficient number of shelters, as constant stress from the lack of hiding places negatively affects the cichlids' immune system.