Colorful fish with yellow body, blue and purple dorsal fin, and greenish tint, swimming near green plants in an underwater environment.

Protomelas taeniolatus

Red Empress cichlid

A blue and black betta fish swimming in an aquarium with aquatic plants in the background.

Siamese fighting fish

Green Emerald Halfmoon Beta

Close-up of a small black fish with a white tip on its tail, swimming in sandy water near some green plants.

Apteronotus albifrons

Black Ghost Knifefish

Fresh water fishes

Colorful tropical fish swimming underwater surrounded by aquatic plants.

Mikrogeophagus ramirezi

Ram Cichlid

Colorful fish with a large, bulbous head, red and white pattern, swimming near the ocean floor with gravel and a black rock, against blue water background.

Flowerhorn cichlid

A discus fish being held by a person's hand, with distinctive orange, white, and yellow markings and a bright red eye.

Symphysodon discus

Albino White Butterfly Discus

Several angelfish swimming in an aquarium with a dark background and teal wall.

Pterophyllum scalare

Angle Fish

Red and pink fish with patterned fins swimming in an aquarium.

Aulonocara sp

Strawberry Peacock Cichlid

Colorful fish swimming in an aquarium with rocks and a piece of wood

Betta hendra