Achilles Tang: Species Overview and Introduction

Achilles Tang is a tropical aquarium fish known for its intense color display and bright highlights. In addition to its wide variety of exciting behavior, this fish is also a famous breeder due to its ease of raising healthy offspring. Furthermore, the Achilles Tang is a good choice for those looking for a beautiful fish.

Introduction to Achilles Tang Fish

The Achilles Tang fish is a tropical aquarium fish that originates from Indo-Pacific waters. This species is known for its strong fighting ability and acrobatic displays, which have made it a famous breeder due to its ease of raising healthy offspring.


The Achilles Tang can be found in schools in the wild; one male individual usually dominates these groups. These fish also differ significantly from other standard tank companions because they are active swimmers with an excellent vision that helps them locate food and mates.

Physical Features

The Achilles Tang fish is a robust, medium-sized fish that can reach a length of 9 inches. The body is elongated and streamlined with a slightly compressed head and dorsal fin set back on the body. The coloration varies depending on location, but this species generally has dark green sides with silver or white spots dorsally. Several black bands also run along the lateral line, giving this fish its name – Achilles Tang. The adipose fin is located just behind the dorsal fin and may be blotched in color, while the caudal (tail)fin is white with a black outline. This fish is generally peaceful but can become aggressive when defending its territory or during mating displays.

Environmental Factors

The Achilles Tang is a hardy fish that can withstand many water conditions. While it prefers warmer water, this species is tolerant of various temperatures and pH levels. The Achilles Tang does best in an area with plenty of hiding places and some floating plants or logs to swim around. It would help if you kept adult fish in groups of at least six specimens, but larger tanks can accommodate up to 24 fish without issue.

Diet and Feeding

The Achilles Tang is an omnivore that feeds on other small fish, crustaceans, and worms. This species does well in captivity when offered a variety of feeder items, including live and frozen bait, pellets, and vitamin-enriched water.

Special Considerations

The Achilles Tang is a popular fish for the aquarium trade and should be provided plenty of room to swim and explore. Achilles Tang fish should not be kept with aggressive fish species, as they can become food for predators. This fish is also sensitive to changes in water quality, so regular testing and adjustment of the aquarium pH levels are recommended. This species can get aggressive when disturbed, so it is essential to have a well-trained owner in charge of keeping these fish.


Achilles Tang fish are a popular aquarium fish that you can find in wide varieties and colors. While their overall body shape is generally round, the dorsal (back)fin can be either dark or light with a black outline, while the caudal (tail)fin is white with a black outline. The Achilles Tang fish generally have soft scales, which give them an appearance of being slimy. As juveniles, these fish may have various blotches and bands on their bodies, but they will eventually disappear. Sexual dimorphism is present in the Achilles Tang fish, with females slightly larger than males.

Behavior and Temperament

The Achilles Tang fish is a peaceful and schooling fish that should be kept in a well-maintained aquarium with plenty of larger tankmates. These fish are prone to aggression and will defend their territory if necessary. Omnivores require live and fleshy foods, making it challenging to keep on an all-plant diet. While these fishes can swim surprisingly fast for their size, they are generally quite lazy and do best when provided with areas to rest, including plants and driftwood.

Compatibility With Other Fish Species

It would be best to keep the Achilles Tang fish with other peaceful and compatible aquarium species. They are not recommended to be kept with carnivorous or predatory fish as they can become prey themselves. Make sure to do some research before buying any fish – common incompatibilities include different gaits, sizes, and water conditions.

Achilles Tang Habitat and Care

Achilles Tangs are an excellent aquarium fish for those who want a colorful and exciting addition to their tank. They are active fish and need a lot of space to swim around. Make sure to keep the water clean and clear, and feed them with live or pellet food daily to ensure their health and thriving. A well-planned habitat is a must for these active fish, so consider dimensions and design before you buy.


Achilles Tangs are not as easy to breed as other popular aquarium fish species, but with some patience and luck, you can produce some fry. Provide ample hiding spaces for the females and offer them plenty of fresh food – including live plants – to eat as with all spawning events. In addition, you may want to add a few pieces of driftwood or another floating object to the tank for added interest.

General Raising Tips

The Achilles Tang fish is relatively easy to raise. You will need a tank of 50 gallons in size for the male and females. Provide plenty of floating plants, rocks, and other hiding places to rest on as well as healthy food items such as live feeder worms or frozen bloodworms. Additionally, you will need to provide a temperature gradient of 72-78 degrees Fahrenheit with a pH of 8.1-8.4.