Changes

Artificial fish ponds were likely the first type of aquarium in antiquity. In ancient Mesopotamia and Egypt, fish were likely placed in artificial ponds, as most cities were located along rivers and fish likely served as sources of food but possibly also amusement. It is possible that sacred fish were kept in temples not so much as pets but rather as symbols or embodiement of fish gods. For instance, the god Dagon, mentioned in the Bible, was often depicted as a fish god.The Egyptian goddess Hatmehit, similarly, may have had fish represented with her. In Egyptian reliefs, fish have been displayed as being placed in artificial environments, including ponds or lakes created in gardens or specific places.<ref>For more on early fish keeping in Mesopotamia and Egypt, see: Vernon N. Kisling (ed.) (2001) <i>Zoo and aquarium history: ancient animal collections to zoological gardens.</i> Boca Raton, Fla, CRC Press.</ref>

Perhaps China is the best known early culture for developing what became fish pets. China, for over 2000 years, has known to have bred carp for their color and beautifybeauty, what we call today as goldfish (Figure 1). The koi, a type of carp perhaps originally from Iran and Central Asia, was likely imported to China and over centuriesdeveloped the variety of colors we see in many types of goldfish today. The Jing dynasty (265-420 CE) was the first to record the process of raising goldfish for their colorand raising as ornamental fish. While initially the carp may have been raised for food, it was noticed that sometimes fish naturally produced colors such as orange or redas a type of mutation. This led to these fish being bred for their colors in royal settings and estates of the wealthy. The raising of goldfish soon became a source of pride for royal Chinese figures and officials, where goldfish varieties were even raised indoors, enabling some types that would normally die easily in an outdoor environment to thrive and adapt better to the indoors.<ref>For more on the development of goldfish, see: Ricardo Calado, Ike Olivotto, Miquel Planas Oliver, & Joan Holt (eds.) (2017) <i>Marine ornamental species aquaculture.</i> Chichester, West Sussex, UK, Wiley-Blackwell, pg. 4.</ref>