Hujeta gar size + growth rate?

[Peacock_bass_fr]

I’ve had a hujeta gar for about a year now, I got it when it was three inches long and now it’s about six. He eats good and had clean water. I was expecting him to at least put up 1/2 inch/mo growth rate, but he only grew 1/4. Do you think he’ll ever hit 1 ft and any tips how to get him to grow bigger