The International Game Fish Association, or IGFA for short, is like a big club for people who really love fishing. It's like when you and your friends get together to play games, the IGFA is where big people who love fishing join forces and play the game of catching fish.
But it's not just any kind of fish - these fish are really big and important, like the ones you see in pictures that are as big as a grown-up or heavier than yourself.
The IGFA keeps track of all the big, important fish that are caught by fishermen from all over the world, just like how you keep track of your blocks when you play with them. The IGFA has a bunch of people who work there, who make sure that all the rules for catching these fish are fair and safe for everyone. They also make sure that the fish are treated really nicely, and are released back into the water if they're not going to be eaten.
The IGFA has awards for the people who catch the biggest and most amazing fish. So, if your dad or your uncle or your friend's dad catches a really big fish, they can submit it to the IGFA and if everything checks out, they might get an award!
Overall, the IGFA is a really cool place for grown-ups who love fishing, where they can share their exciting stories about catching these really amazing fish and see who caught the biggest fish of them all!