Luckily, discus fish exist. They're just as colorful as any saltwater fish, and some of them grow as big as dinner plates.

You might see blood-red parrot cichlids, Oscars, angelfish, and discus fish in your local pet store. Some cichlids, like tilapia , are regularly consumed as a part of the human diet.

Discus These fish can display a spectrum of colors, from deep blues and greens to bright reds and oranges. Their distinctive round shape and intricate patterns make them a centerpiece in any aquarium.

Discus fish, known as the king of the aquarium, need pristine water. ... Neon Tetra Neon tetras are small, peaceful, grouping fish known for their glowing blue and red stripes.