Science can be a profession or a leisure activity.
Anyone can be a scientist, anyone can observe and discover new things.
One aquarium hobbyist, Gary Lange, has been at the forefront of finding new, exciting species of rainbowfish from Australia and New Guinea. It started out as a leisure activity: keeping fish and catching them while abroad. Then, it became a passion. As Gary progressed through the aquarium hobby, he became more interested in science and scientific discovery- I remember meeting Gary and trading rainbowfish eggs for scientific literature on describing species. He really wanted to learn taxonomy and reach the pinnacle of both his natural history and his fish keeping interests.
While I don't think Gary has described a species himself, he was honored in a recent publication in the Fishes of Sahul, a publication of the Australia New Guinea Fishes Association. The honor consisted of describing a new species of rainbowfish after Gary, Melonotaenia garylangi.
While I am not a fan of naming fish, or any species, after people... I'm proud to be hypocritical here. It's a much deserved honor and one that I hope many hobbyists will strive for.
Congrats to Gary!