It's just a name for a specific variety of a species, like "sunset" hygro or crypt. crispulata "balansae" often (usually) called crypt. balansae. Tropica has or had a patent, it's more specific & different than just e. parvifolus.
If you develop a new variety of plant or fish you could call it Genus species "BFM", though it's kinda tacky to name them after yourself
& is often in honor of someone else, like the company that pays, a colleague or family member