I am also misunderstanding (COLD WATER & NATIVE NA). From my personal experience with the "unspeakable" I have found precious little difference in the progress of development anywhere between unheated outdoor pond to indoor heated aquarium.
IMO they are NOT coldwater fish. They THRIVE in Florida WARM waters! Well, they are STRICTLY North American, so I guess that is what best "lumps" them into that "category".
Bowfin also fall under the "Temperate" category which is another reason why they got lumped into that forum; in reality, said forum is kind of a catch-all type forum for a bunch of different fishes that fall under one of the three categories in the sub-forum title.
In an ideal world, bowfin would be added in with the "Gar Sub-forum" to form the "Gars & Bowfin Sub-forum" a.k.a "Holostei Sub-forum" since they are closely related after all. There are other changes that could be made such as move both the "Arowana Sub-forum" and the "Knifefish Sub-forum" from the "Ancient Fish Forum" because both of these groups of fishes fall under Teleostei which is sometimes referred to as the "modern fishes." Freshwater Stingrays and Sturgeon & Paddlefish could actually get added to the "Ancient Fish Forum" because of their ancient nature (from an evolutionary standpoint). I would suggest adding lampreys to the "Ancient Fish Forum", too, but literally next to no one on here has ever kept them for long.
But, hey, let's get the bowfin added to this sub-forum before we start going crazy with changes.

I rarely EVER see the "trolling" and "antagonistic" types of posts in the Gar forum that plagues the Lounge, Fishing, Cold Water & even General Aquaria forum to a lesser extent.
Only the most brazen trolls venture here, but they get eaten for breakfast.
