Hey, so one of the fish that I've been fascinated by for a very long time, but never had the resources to invest in, is the African butterflyfish. I know that they need brackish water, live plants and (at least some) live food, but my big question is... how high can they jump? Everything I've read thus far insists that butterflyfish must be kept in a sealed aquarium, but I'm wondering if it would be possible to have a shallow, open tank. Say I had a 40 gallon with a height of 16 inches, with the water level only 6 - 8 inches high (with a few rocks and/or driftwood above the water level for visual interest). Is it possible that the butterfly fish could leap 8 - 10 inches into the air from such a shallow depth? I'm interested to hear everyone's thoughts.