Males are much smaller from what I gather. Even then, females take decades to get very large. I think it's great someone has kept a gator gar for 12 years. So many don't. I've had one for a little over a year now and it's 26". I hand feed it. It's looks like feeding a baby alligator, only very gentle and graceful. Some times I play tug with it and it loves to be pet all over. Incredibly social creature. I have plans to get it a very large tank in the near future. I'm hoping Garp is a female since they get much larger.