Pet fish are great. The keeping of them is relaxing, educational and certainly fun. Most aquarists keep tropical freshwater fish in their aquariums. Shoaling fish like the neon tetra, glowlight tetra or hatchet fish. Cichlids like the discus, angel fish or the African cichlids of Lake Malawi and Tanganyika. Livebearers, killifish, anabantids and catfish – […]