A full grown Bala Shark can grow up to 12 inches in length. These fish are purchased by a lot of beginners in the aquarium trade. I believe the main reason you don’t find a lot of full grown ones is because they need such adequate amounts of aquarium size. People and especially beginners are not giving them the space they need in a fish tank.

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Most people don’t know that when this fish is in an aquarium it can sometimes be a nuisance. Because these type of fish are constantly moving around and they don’t stop moving. That can sometimes stress out other fish and create problems with her health. A fish in an aquarium that is stressed cause is their immune system to break down. So not only do these fish grow pretty large but they are constantly swimming around looking for new things and that’s why tank size is a huge factor on keeping his fish. It’s essentially gives them that space that they need to swim around.