The Collaborative International Dictionary
Rainbow \Rain"bow`\ (r[=a]n"b[=o]`), n. [AS. regenboga, akin to G. regenbogen. See Rain, and Bow anything bent.] A bow or arch exhibiting, in concentric bands, the several colors of the spectrum, and formed in the part of the hemisphere opposite to the sun by the refraction and reflection of the sun's rays in drops of falling rain.
Note: Besides the ordinary bow, called also primary rainbow, which is formed by two refractions and one reflection, there is also another often seen exterior to it, called the secondary rainbow, concentric with the first, and separated from it by a small interval. It is formed by two refractions and two reflections, is much fainter than the primary bow, and has its colors arranged in the reverse order from those of the latter.
Lunar rainbow, a fainter arch or rainbow, formed by the moon.
Marine rainbow, Sea bow, a similar bow seen in the spray of waves at sea.
Rainbow trout (Zo["o]l.), a bright-colored trout ( Salmo irideus), native of the mountains of California, but now extensively introduced into the Eastern States, Japan, and other countries; -- called also brook trout, mountain trout, and golden trout.
Rainbow wrasse. (Zo["o]l.) See under Wrasse.
Supernumerary rainbow, a smaller bow, usually of red and green colors only, sometimes seen within the primary or without the secondary rainbow, and in contact with them.
Wikipedia
The California golden trout, or simply the '''golden trout ' (Oncorhynchus mykiss aguabonita''), is a subspecies of the rainbow trout native to California. The golden trout is native to Golden Trout Creek (tributary to the Kern River), Volcano Creek (tributary to Golden Trout Creek), and the South Fork Kern River.
The California golden trout is closely related to two other rainbow trout subspecies. The Little Kern golden trout (O. m. whitei), found in the Little Kern River basin, and the Kern River rainbow trout (O. m. gilberti), found in the Kern River system. Together, these three trout form what is sometimes referred to as the "golden trout complex".
Usage examples of "golden trout".
The water splashed over him as he swept up the golden trout in his claws.