From Nookipedia, the Animal Crossing wiki
The red snapper (タイ, Tai) is an uncommon fish found in the ocean, which sells for 3,000 Bells. It can be found all year round at anytime of the day. It has a medium shadow size, making it the same size as the squid and barred knifejaw.
 Donating to the museum
 In Animal Crossing
"Snaptacular! Snaptastic! Sna... Er, snap... That is... Oh, bother! It wasn't particularly funny anyway. Please attempt to ignore my sorry lack of humor. Despite it, we will treat this fish with much care."
 In Wild World
"Relatively few places serve red snapper, but... ...I actually understand why. It's rather dry, and not at all flavorful, eh wot?"
It can be found in the back, ocean tank in the aquarium.
 In City Folk
"Hoo, magnificent! Fine job, snapping up a red snapper! ...Hoo now? You didn't find that uproariously funny? In any case, right near the gills of this fish is a bone that actually looks just like the fish itself... Some cultures believe keeping one of these on you brings good luck. Good luck is a snap! Hoo!"
It can be found in the tank at the back of the aquarium, with other ocean fish.
 In New Leaf
After donating the red snapper, the plaque near its aquarium will display the following information:
"Red snappers are gregarious fish that often form schools close to reefs and shipwrecks. They are a prized food fish, but because of demand, other species are often served as "red snapper." They usually live up to 50 years. The oldest recorded red snapper was thought to be 57."
It can be found in the ocean tank in the northeastern room of the fish and deep sea creatures section.
 Encyclopedia information
 Wild World
 City Folk
 Further information
The red snapper, or Lutjanus campechanus, is a type of reef fish found in the Gulf of Mexico. It is Latin American and original name is Pargo, which some people may recognize it as. They can be caught up to 90 m (300 ft) below the surface of the water, and prefer to swim near the bottom in reefs, ridges, and even offshore oil rigs and shipwrecks! It shares its looks with other snapper fish, with the sloped profile of its body (between the mouth to the top of its head). However, it lacks prominent upper canine teeth found in other snapper fish but has sharp, needle like teeth in their place. They are a commercial fish as well as a recreational fish, making it somewhat overfished. This is reflected in red snapper sales in the USA, which most are in fact different species of snapper fish, just mislabeled. It can live up to 50 years of age.
 Names in other languages