Chilodus (Chilodus punctatus) stands as one of the most unusual and understudied fish in the characin family. This elegant species from the Amazon basin has captured the hearts of experienced aquarists with its unique behavior and graceful appearance. From my experience keeping rare characins, Chilodus requires a specialized approach, but the results are truly rewarding.
The Kerry tetra, also known as the purple emperor tetra (Inpaichthys kerri), is a small aquarium fish native to Brazil. It originates from the upper Madeira River basin—the largest tributary of the Amazon—inhabiting numerous streams and channels flowing through tropical forests. Thanks to its compact size, this species is perfectly suited for nano aquariums.
The blind cave fish (Astyanax mexicanus) is a species of freshwater ray-finned fish from the characin family. This remarkable creation of nature possesses an unlimited capacity for adaptation. In the wild, this fish inhabits the lower reaches of the Rio Grande, Nueces, and Pecos rivers in Texas, as well as central and eastern Mexico.
The flame tetra has been a staple in home aquariums since the 1920s. Thanks to its vibrant coloration, small size, relatively easy care requirements, and straightforward breeding, this little fish has won the hearts of multiple generations of aquarists. In my experience, the flame tetra remains an excellent choice for beginning aquarium keepers — despite the influx of new species available in recent years, all members of the characin family, including the flame tetra, deserve just as much attention from modern hobbyists as they did in the past.
The Cardinal tetra fish is one of the most beautiful aquarium fish. Its luminous emerald longitudinal stripe in a flock of 10 – 15 fish creates the impression of micro lightning flashes, attracting the eye and mesmerizing the observer. And the predominance of red coloration gave this species a number of names, such as tetra – Cardinal.
Black Tetra (Gymnocorymbus ternetzi), commonly known as Black Skirt Tetra or Petticoat Tetra, is one of the most popular and hardy freshwater aquarium fish that has rightfully earned the love of aquarists worldwide. This elegant representative of the Characidae family remains a relevant choice for both beginner and experienced aquarists in 2026.
Hyphessobrycon innesi is known to aquarists relatively recently. Since it was discovered in nature, it has won the hearts of more than one generation of aquarists. Its unusual bright coloring is able to revive any aquarium. A relatively simple care for this fish allows you to recommend it to contain novice aquarists.