Severo Aquários is an aquarium retailer specializing in marine aquarism, with products and services for both marine and freshwater aquarium enthusiasts. The store offers rare corals and bred fish, along with aquarium design and installation and ongoing maintenance services. Its online catalog covers aquariums and accessories, including nets, tweezers, filters, lighting, heaters, and temperature controls. Customers can also find circulation and dosing pumps, skimmers, UV sterilizers, compressors, and other equipment.

Severo Aquários stocks food for corals, fish, and reptiles, as well as water-treatment products such as conditioners, biological media, chemical filtration supplies, medicines, salts, supplements, and water tests. Featured products include aquarium kits, submersible pumps, UV components, fish foods, and tools for aquarium care. The site also publishes educational articles on topics such as starting a freshwater aquarium, managing green water, understanding nitrogen compounds, and setting up a beginner marine aquarium. Customers can contact the store by phone, WhatsApp, or email, with service hours listed from Tuesday to Saturday, 9 a.m. to 7 p.m.