Hey Larry, she is 2 1/4". I couldn't catch her cause she kept diving into her shell, so finally I realized I just needed to look at where her tail was vs her head when she was sitting on top of the shell. I feel smart : I feel this was very accurate though. I would ask Allen if he thinks this size would be ok. I am pretty sure it is, but am not looking at the fry so can't be 100%.