Prisms and rainbows?

[ColoredRock]

In October we lost an amazing mutt..we came home to a prism (rainbow) reflecting off the fish tank.. anyone else have this in their house?

This was today the Mutt shining down on her buddy.

 

[Heres_doe_]

Never seen a rainbow coming from my tank onto any surface. Is your tank by a window

 

[ColoredRock]

Never seen a rainbow coming from my tank onto any surface. Is your tank by a window

it is

 

[dakoop]

That's an amazing way to look at it.
Sorry about your pup