Ok iam ok with the fact you counted to 10..20..100 ... the shark was hatched from an egg in the 200g... there is additional information to inform you of because you asked what the shark was housed in at present in which i replied about its current tank (which is also not tall/deep enough for the bat fish either) ..you can stpo counting now....my new house is currently being built aprox 45 days from completion with a coustom built tank of 10 x 6 x 4 @ just under 1,800g ..tank is actually in place waitning on sump and plumming..also waiting on trim carpenter and landscasping and final county inspection to be able to move to the new tank..soryy for the rise in your blood presure and the lack of future info on my part