Hi ! Going to offer some updated information. I am a volunteer aquarist assistant over at Birch Aquarium, and we have both the weedy and leafy sea dragons feeding on frozen mysis here and there (the leafy sea dragons take to the frozen better than the weedys). We now have around 12 weedy seadragons in a tank behind the scenes in addition to the ones on display. The 2-4k estimate is right on target. There's about 8 cameras watching the weedy sea dragons 24/7 to keep track of mating behavior. I get to feed them every sunday
One of my favorite tasks.