The saying that any species grows larger when it goes abroad isn't just talk; in most cases, it's true.
Take blackfish, for example, an omnivorous creature with almost no natural enemies in the wild. It eats whatever it sees, making it the glutton of the fish world.
In Great Xia, because blackfish is so popular among diners, it doesn't grow big before it's served on the table, so its size is limited.
But abroad, the blackfish's biggest enemy—Great Xia diners—doesn't exist, so it's free to grow larger, easily surpassing the size of domestic blackfish by several times.
Bullfrogs, though not a Great Xia species but a North American one, have spread across the globe as tourism and transportation have developed.
Bullfrogs are similar to blackfish; they eat whatever they see and if they're hungry, they'll even eat their kind.
