Professional Fish Keepers is a specialist aquarium retailer in Portugal, serving hobbyists who want to build and maintain healthy freshwater and marine environments. Its online store brings together livestock, aquariums, equipment, food and care products for a wide range of setups, from planted tanks to reef systems.

Customers can browse freshwater and saltwater fish, corals, anemones, plants, shrimp and other invertebrates, as well as turtles and related supplies. The equipment range includes aquariums, filters, pumps, lighting, heating, water-treatment and osmosis systems, controllers, skimmers and filtration media. The store also stocks fish and coral foods, frozen foods, medicines, water tests, additives, substrates, rock, driftwood, décor and maintenance tools.

Professional Fish Keepers highlights delivery for orders placed by 5 p.m., a live-arrival guarantee for animals, specialist support and a 30-day returns policy. Its catalogue includes products for both everyday aquarium care and more specialized reef keeping, making it a resource for aquarists seeking livestock, supplies and technical equipment in one place.