Tropica.RU is a Russian-language aquarium and terrarium portal for hobbyists, offering a broad collection of articles, reference material, photographs, and community resources. Its aquarium coverage includes fish, shrimp, aquatic plants, equipment, food, water treatments, and guidance on fish diseases and medications. Readers can explore dedicated information on groups such as Corydoras, catfish, killifish, labyrinth fish, tetras, carp, and American and African cichlids. The site also covers terrarium animals, including amphibians, snakes, lizards, turtles, isopods, millipedes, spiders, scorpions, and insects.

Tropica.RU publishes species profiles, care-related articles, scientific and taxonomic updates, and practical discussions of aquarium topics such as plant cultivation and CO2 use. Its content is complemented by a forum, photo galleries, a library, and aquarium-related journals and publications, including Aquarium Magazine, Aqua Animals, and Modern Aquarium. The portal also reports on exhibitions, seminars, conferences, and aquarium clubs, helping enthusiasts discover both specialist knowledge and activities within the hobby.