Rhino Blenny - Atlantic

Paraclinus marmoratus

(0 Reviews)

Rhino Blenny - Atlantic

Rhino Blenny - Atlantic

Paraclinus marmoratus

(0 Reviews)

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Rhino Blenny - Atlantic Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Carnivore
Origin: Eastern Atlantic
Acclimation Time: 2+ hours
Reef Safe: Yes
Minimum Tank Size: 30 gallons
Max Size: 4 inches

Rhino Blenny - Atlantic

The Atlantic Rhino Blenny (Paraclinus marmoratus), also known as the Marble Blenny, Canary Blenny, or Rock Blenny, is native to the warm waters of the Western Atlantic Ocean, preferring coral reefs and rocky substrates. With an average size of 4 inches and a lifespan of 4-6 years, they are peaceful omnivores, feeding on a variety of frozen and live foods along with marine algae. To ensure the well-being of Rhino Blennies, it's essential to provide them with an appropriate aquarium setup, including a minimum tank size of 30 gallons, stable water conditions with a pH of 8.1-8.4, salinity levels of 1.023-1.025, a temperature range of 74-78°F (23-26°C), and moderate water flow to mimic their natural habitat. While generally peaceful, they may become territorial with similar species. Compatible tank mates include Clownfish, Firefish Goby, Royal Gramma, Cleaner Shrimp, and Yellow Watchman Goby. Saltwaterfish.com offers them occasionally through aquaculture, ensuring their adaptability and reducing impact on wild populations. They require a minimum tank size of 30 gallons with stable water conditions (pH 8.1-8.4, salinity 1.023-1.025, temperature 74-78°F), and moderate water flow.


Found in coral reefs and rocky substrates of the Western Atlantic Ocean, Rhino Blennies thrive in shallow, coastal areas with ample hiding spots.

Reef Compatibility:

Peaceful and reef-safe, Rhino Blennies pose no threat to corals or other invertebrates, making them a safe addition to reef ecosystems.

Size and Lifespan:

With an average size of 4 inches, Rhino Blennies can live for 4-6 years in well-maintained aquariums.

Diet In Captivity:

Omnivorous, Rhino Blennies enjoy a varied diet of frozen and live foods like brine shrimp and copepods, along with marine algae and microorganisms.

Aquaculture Availability:

Rhino Blennies are occasionally available through aquaculture It's advisable to check with reputable suppliers for availability.


Peaceful and sociable, they are suitable for community aquariums, getting along well with a variety of tank mates.

Sexual Dimorphism:

Rhino Blennies have minimal sexual dimorphism, while males may be slightly larger with more prominent features.

Coloration Changes:

Vibrant as juveniles, colors may become more subdued or develop a brownish or greenish tint as they mature.


Known for their peaceful and non-aggressive nature, they are sociable and suitable for community tanks.

Compatible Tank Mates:

Tank Requirements:

For a single Rhino Blenny, a minimum tank size of 30 gallons is recommended, while larger tanks are preferable for pairs or small groups. The water conditions should maintain a stable pH level between 8.1-8.4, salinity levels of 1.023-1.

Common Names:

Rhino Blennies are also known as Marble Blenny, Canary Blenny, and Rock Blenny.

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