Yes there are fish shows! I used to show fish a lot. I'd get a beat up one with good markings from the distributor I worked at. ( I actually use to know evry fishes judging points, Like in dogs where certain breeds legs had to be a % of their length, etc.) I'd raise them, put them in a show, bag a sweet trophy then sell him at the auction after the show. You'd be amazed what you can get for a fish if you throw in the trophy. I sold a Coral beauty for $120, and he only got 3rd place. The 2 main judging point specific to them are, range of color the darkness of the blue compared to the brightness of the yellow, and color progression, don't really know how to explain that. Join your local fish club, your lfs probably has info. they seel everything at the auctions.