Zodiac celestial coordinate system, or more specifically an ecliptic coordinate system, which takes the ecliptic as the origin of latitude and the Sun's position at vernal equinox as the origin of longitude. The English word ' derives from ', the Latinized form of the Ancient Greek "zōidiakòs kýklos" (), meaning "cycle or circle of little animals". "Zōidion" () is the diminutive of "zōion" (, "animal"). The name reflects the prominence of animals (and mythological hybrids) among the twelve signs. The zodiac was in use by the Roman era, based on concepts inherited by Hellenistic astronomy from Babylonian astronomy of the Chaldean
Clown loach the clown loach being placed in a genus of its own, "Chromobotia". The genus "Chromobotia" derives its name from the Greek word "chromo", meaning "colour", and the regional Asian word "botia", meaning "warrior" or "soldier"; the specific epithet "Macracanthus" is derived from the Greek word "macros", meaning "large" and the Latin word "acanthus", meaning "thorny", referring to the large spine below each of the fish's eyes. The common name, "clown loach" comes from the fish's bright colors and stripes (many tropical fish with stripes that stand out are commonly called "clown") as well as from its habit of 'entertaining' aquarium