rainbow fish

American  

noun

1. guppy.

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Etymology

Origin of rainbow fish

An Americanism dating back to 1885–90

Example Sentences

In unison, they described the rainbow fish learning to find happiness and self-expression by sharing its shiny and multi-colored scales.

From Washington Times

In one fishwife’s basket there was a score or more of lovely striped rainbow fish that I was pining for; she was charging a lot.

From New York Times

That exquisite hue and transparency of submarine day, and these shoals of rainbow fish have not enraptured me again.

From Project Gutenberg

Wherever there was shadow this pale glimmer painted it with ethereal colours, like the backs of rainbow fish moving under water.

From Project Gutenberg

And then there wuz the rainbow fish, which is found both on the Pacific and Atlantic coasts—it has all the colors the rainbow ever had, and more too.

From Project Gutenberg