Green Wolf Eel

Congrogadus subducens

(1 Reviews)

Green Wolf Eel
The Green Wolf Eel is distinguished by its elongated body and striking green coloration, making it a captivating sight in predator tanks. Known for its adaptability and hunting prowess, it brings a unique dangerous charm to large reef environments.

Green Wolf Eel

Congrogadus subducens

(1 Reviews)

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Green Wolf Eel Care Facts

Care Level: Easy
Temperament: Aggressive
Diet: Carnivore
Reef Safe: No
Minimum Tank Size: 120 gallons
Max Size: 18 inches

The Green Wolf Eel, Congrogadus subducens, is long-lived and well suited to the home aquarium. As with most large eels, the Green Wolf Eel requires a spacious aquarium with an abundance of rock work providing its places to hide its body. The Green Wolf Eel has very poor eyesight so please be careful when feeding it. They are also not best suited for a community reef tank and do best in a species only tank. Also, it is imperative that your tank has a tightly sealed lid to prevent escapes. Our eels will eat a varied carnivorous diet including fish, shrimp, clams, and octopus so you can see why they are not the best for community tanks - they would be menace. The Green Wolf Eel has a unique green/brown/grey body with a flowing lime green ribbon as its dorsal fin. The aquarist should prepare to house the Green Wolf Eel before purchase to ensure that the tank is compatible. 

Green Wolf Eel Overview

The Green Wolf Eel (Congrogadus subducens) is a fascinating marine species that can be a unique and captivating addition to your saltwater aquarium. This hardy and adaptable creature has specific requirements, and understanding its characteristics is crucial for successful care.

Habitat and Reef Compatibility of the Green Wolf Eel

The Green Wolf Eel is commonly found in the Indo-Pacific region, inhabiting rocky and coral reefs. While they are not considered reef-safe due to their burrowing behavior, they can thrive in a well-decorated aquarium with ample hiding spaces. Providing a substrate for burrowing will mimic their natural habitat and promote a sense of security.

Size and Lifespan of the Green Wolf Eel

Green Wolf Eels are relatively small as juveniles, typically measuring around 12 inches. However, they can grow significantly more significantly, reaching up to 3 feet as long as adults. These fascinating creatures can live in captivity for more than ten years with proper care.

Diet of the Green Wolf Eel in Captivity

Feeding the Green Wolf Eel is relatively straightforward. They are carnivores, and a diet of meaty foods such as shrimp, squid, and fish fillets is recommended. Offering a diverse diet to ensure they receive essential nutrients is important.

Aquaculture and Availability of the Green Wolf Eel

Green Wolf Eels are not widely aquacultured, making them more commonly sourced from the wild. However, responsible sourcing practices, like those employed by, can help minimize the impact on wild populations. This ensures that hobbyists can enjoy these intriguing creatures while supporting sustainable practices.

Compatibility with Other Fish and Invertebrates

Green Wolf Eels can coexist with other non-aggressive fish species that are too large to be considered prey. However, caution should be exercised when introducing them to a community tank, as they may see smaller fish and invertebrates as potential prey. Careful selection of tank mates is essential to prevent any conflicts.

Sexual Dimorphism of the Green Wolf Eel

Unlike other marine species, the Green Wolf Eel does not exhibit significant sexual dimorphism. Distinguishing between males and females can be challenging, and visual cues may not be reliable. It is generally advisable to obtain a compatible pair if breeding is a consideration.

Juvenile to Adult Coloration Changes in the Green Wolf Eel

Green Wolf Eels often display a vibrant green coloration, which may shift to a darker shade as they mature. Their ability to change color helps them blend into their surroundings, providing a natural defense mechanism.

Temperament of the Green Wolf Eel

These eels are generally peaceful but can become territorial, especially if threatened or their hiding spaces are invaded. Observing their behavior and respecting their need for hiding spaces is crucial to maintaining a stress-free environment.

Tank Requirements for the Green Wolf Eel

To ensure the well-being of your Green Wolf Eel, it is recommended to provide a tank with a minimum size of 125 gallons. A secure lid is essential, as these eels are known for their escape artist abilities. Maintain a stable temperature between 72-78°F, a pH level of 8.1-8.4, and a salinity of 1.020-1.025. Adequate water flow and quality filtration are also crucial for their health.

Other Common Names for the Green Wolf Eel

The Green Wolf Eel may also be called the Conger Eel or Green Moray Eel.

Five Compatible Tank Mates for the Green Wolf Eel

Why Choose is committed to providing ethically sourced and healthy marine life. Their stringent quarantine and acclimation processes ensure that the Green Wolf Eels available for purchase are free from diseases and ready to thrive in your aquarium. Their dedication to sustainable practices makes them a reliable choice for hobbyists seeking quality marine specimens.

The Green Wolf Eel is a captivating marine species that requires specific care to thrive in a home aquarium. Understanding their habitat, behavior, and tank requirements is essential for creating a suitable environment. When sourced responsibly from a reputable provider like, these eels can become a unique and rewarding addition to your saltwater aquarium.

Beautiful Green Wolf Eel swims in out of the rock formation in the saltwater fish tank. Healthy and energetic after acclimation.

Reviewed by: Orlando Asumata on Sept. 12, 2021

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