Goldfish
The goldfish ("Carassius auratus") is a freshwater fish in the family Cyprinidae of order Cypriniformes. It is one of the most commonly kept aquarium fish.
Synchiropus splendidus
The mandarinfish was first described as "Callionymus splendidus" in 1927 by Albert William
Herre, an American ichthyologist working in the Philippines. It was later placed in genus "Synchiropus". The generic name "Synchiropus" is from Ancient Greek "syn-", meaning "together", and "-chiropus" meaning "hand-foot". The specific epithet "splendidus" is from the Latin for 'bright' or 'glittering.'
The common name of the mandarinfish comes from its extremely vivid colouration, evoking the robes of an Imperial Chinese mandarin.
Other common names include mandarin goby, green mandarin, striped mandarinfish, striped dragonet, green dragonet and sometimes psychedelic mandarinfish.
The similarly named mandarin fish ("Siniperca chuatsi"), properly known as the Chinese perch, is distantly related.