Carp of all varieties can grow to formidable sizes (check out this giant goldfish recently hooked in France), but none are as large as the Giant Barb found in Southeast Asia.
These behemoths regularly grow to as long as 10 feet long and adults are rarely found under 5 feet. Despite their namesake, giant barbs actually carry no barbels. And although they grow to such large sizes, giant barbs are as harmless as your pet goldfish. They prefer to eat small organisms like algae, phytoplankton and, occasionally, fruit.