HI-FIN BANDED SHARK
Even though the Chinese High Fin Banded shark isn’t a real shark, it is still a bad aquarium pet for most enthusiasts. These gorgeously skinned fishes are best suited in ponds due to their enormous sizes that can span over 4 feet long.
It also does not help that they grow at a stupendous rate, from less than 2 inches long as juveniles to 24 inches tall upon maturity. There are very few regular-sized aquariums capable of housing such a big fish, let alone two or three, which is the recommended schooling group.