There is a common myth that “fish will only grow to the size of the tank” however, this is untrue! If a fish is going to grow big it doesn’t matter the size of the tank, it will grow!
Another myth is that if big fish out grow their home tank they can be rehomed at a public aquarium.
We here at the Oceanarium receive several phone calls a week asking us to rehome a lot of these big fish, from situations as above. Unfortunately, for several reasons we can’t take all of them and feel guilty turning them away. We are not the only aquarium or zoo in this situation and this has led to the development of the Big Fish Campaign, trying to reduce the number of these big fish in the pet trade through awareness and education about ‘tank busters’. Only a small percentage of home tanks can house these species once they are fully-grown, as well as keep the animals fed and housed for their entire lives, which can be 20 years!