@Seisage It's MTS - the first prime directive of native fishkeeping is

nce caught, never returned to nature. So if you collect natives, they are with you for their lifespan.
We have different sticklebacks, ("piques" as a street name) and their nesting is supposed to be a great thing to watch. You have to catch them early in the Spring. I've never done it, but I had a friend from Finland who thought they were the greatest thing to watch. They build cool nests.
For anyone interested, the last ice age covered my region, and all fish became extinct. The water was repopulated from species that survived in the Mississippi refuge, which is why we find the same basic fish across the continent. There was cool speciation with darters and such, but where I am, they never returned. My strip of land along the ocean has very few freshwater species, even with anglers of long ago transporting their favourites to local water systems. That whole area below the Great Lakes has wonderful speciation, and darters are among the most beautiful fish found anywhere. We have the start of the low eastern mountains, and they were a barrier.
I was doing an aquarium talk in Ohio years back, and my host was a respected Cichlid collector. I suggested we take a look for darters, and while he happily did it, he started out a bit patronizing about my interest. Then he saw the fish. He really got into it.