The genus that put tarantulas in pet stores, and the genus that got the whole hobby onto CITES Appendix II in 1994. Mexican red knee, fire leg, Mexican red rump before the split moved that one elsewhere.
Everything moving legally in the US is captive bred, which is exactly why the price structure is so stable. No import shocks, no seasonal wild-caught dumping, just steady domestic production. Mature females hold their value well because the growth to get there takes years.
Behaviorally they are calm and they are heavy hair kickers, which are not contradictory. A Brachypelma that is tired of you will bald its own abdomen before it ever considers biting. The 2020 taxonomic split sent the black-legged species over to Tliltocatl, so any listing or care sheet older than a few years will use names that no longer match.