Very nice catch, congratulations!
You may have very well caught the biggest lineside for that body of water.

I'm only vaguely familiar with the area, but judging from your description of the pond & my experiences there probably isn't much of a population of stripers even near that size.

DON'T let me discourage you trying, I could be way off!

Striped Bass typically don't get very big in sm. ponds. As a kid we've stocked stripers from Pyramid Lake into several sm. ponds. Lg. fish usually died pretty quick but populations of smaller ones did well but never got over 3 or 4 lbs., displaying the lg. head & skinny body that yours seems to have developed from the photo.

I would spend some sunrises & sunsets throwing a Zara Spook to search for others. Another method to find out if there are smaller fish try flylinning some dead shad or cut bait such as anchovies, feeling for sm. strikes as the bait slowly sinks, esp. early morning or late evening as it gets dark.

I look forward to hearing about further successes.

Thanks for sharing!
Josh