New York's Sea Grant progam produced this great set of playing cards featuring freshwater & saltwater fish of the New York area. Sadly, they don't seem to be available online, but I'd love to see decks for more U.S. states and elsewhere in the worlds. What an opportunity to play some great fish games! You could play fish "war" where whichever fish is higher up the food chain wins. In a west coast deck, Pacific cowcod would be very rare cards and finding a pair would require buying at least  twenty packs. Or you and your European friends could swap your bluefin tuna cards but then, somehow, they'd both get lost under the couch. 

Get your summer flounder card while you can...