Selecting the right species requires balancing aesthetic appeal, growth rate, and hardiness. For beginners or high-turnover retail, prioritize low-maintenance species like Anubias, Java Fern, or Cryptocoryne, which thrive in low light and do not require CO2 injection. For professional aquascaping clients, focus on high-tech plants like Rotala rotundifolia or Glossostigma elatinoides. Always verify if the plants are grown submersed (underwater) or emersed (above water); emersed plants are generally hardier for shipping but will undergo a 'melt' period as they transition to the buyer's aquarium.