Like most species in the carp family, goldfish produce a large amount of waste both in their faeces and through their gills, releasing harmful chemicals into the water. Active aeration by way of a water pump, filter or fountain effectively increases the surface area and helps to reduce the waste. The goldfish is classified as […]


Nishikigoi (錦鯉, literally “brocaded carp”), are ornamental varieties of domesticated common carp that are kept for decorative purposes in outdoor koi ponds or water gardens. Koi varieties are distinguished by coloration, patterning, and scalation. The most popular category of koi is the Gosanke, which is made up of the Kohaku, Taisho Sanshoku, and Showa Sanshoku […]

Cyprinidae (Carp)

In terms of numbers of species, by far the largest family of fish with about 3,000 living and extinct species in about 370 genera. It comprises freshwater fish that typically have a fairly elongate body, a single dorsal fin without true spines, a forked tail fin, ventral fins in the abdominal position, and no teeth […]