An Opah Fish is this year's game hint
It was identified to be an Opah fish by this Chief Delphi thread, which is the largest discussion about the hint. The Wikipedia article on Opah fish is here.
As always, the hint is very obscure, so there is no certainty overwhat it means.
-Some first thoughts were “Water Game!”, which has been anticipated for a while, but setting up an arena with water in it would be difficult. Personally, I doubt this because if it was a water game, the hint would not be so obvious.
-There is some text in the background that can be seen with increased contrast, but that may be the other side of the page from which this picture was scanned from.
-Someone mentioned that the colors of this fish are the same colors as the FIRST logo, so this could be a connection, but means nothing.
-The image was taken from this site, which is the first thing that comes up when one google image searches “moonfish”. That is a site that sells fish, and it says that moonfish weigh 30-50kgs. This is 66-110lbs, which is reasonable for a weight limit on the robot.
-It could also just be a red herring….
Clever on the weight limit, very clever.