Canary Blenny

Meiacanthus oualanensis

Saltwater Fish Species Group: Blenny Family: Blenniidae

Log in or create an account to add this species to your tanks.

Water parameters

Temp 76-80 F Temperature

Maintaining a stable and appropriate temperature is critical for the survival of aquatic life.

pH 7.8 - 8.4 potential of Hydrogen

Measuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.

NO3 1-20 ppm Nitrate

While less toxic than ammonia, high nitrate levels (above 40–80 ppm) are important to monitor because they can cause fish stress, stunted growth, and harmful algae blooms.

NO2 <0.0001 ppm Nitrite

It is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia

PO4 0.01 - 0.1 ppm Phosphate

It is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.

NH3 <0.1 ppm Ammonia

It is the primary killer of aquarium fish, causing gill damage, stress, and death

Ca 380 - 450 ppm Calcium

Supporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae

KH 8 - 12 dKH Alkalinity

It acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.

Mg 1200 - 1400 ppm Magnesium

It enables coral growth by supporting skeletal formation, assists in metabolic processes, and ensures that calcium is available for corals, clams, and coralline algae.

SG 1.023 - 1.026 SG Salinity

Essential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals

ORP 250 - 400 mV Oxidation-Reduction Potential

A higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.

About Canary Blenny

General information

The Canary Blenny is a small and colorful fish that is native to the Western Pacific Ocean, specifically in the waters around the islands of Oualan and Yap. They are typically found in coral reefs and rocky areas, where they will often dart in and out of crevices and small caves. They grow up to 2.5 inches in length and have a slender, elongated body shape with a bright yellow or golden coloration. The fish have black spots on their head and fins, and a characteristic black stripe running down the center of their body. The Canary Blenny is a popular choice for saltwater aquarium enthusiasts due to its striking coloration and unique behavior.

Diet & nutrition

In the wild, the Canary Blenny feeds on small crustaceans, such as copepods and amphipods, as well as zooplankton. In captivity, they will readily accept a varied diet consisting of frozen or live foods such as brine shrimp, Mysis shrimp, and krill. It is important to feed them multiple times a day as they have a high metabolism.

Determining sex

Sexual dimorphism is not apparent in Canary Blennies.

Breeding & spawning

There is limited information on breeding and spawning of Canary Blennies in captivity.

Diseases

Canary Blennies are susceptible to common fish diseases, such as ich, bacterial infections, and parasites. Proper quarantine procedures and regular water changes can help prevent disease outbreaks.

Origination

The Canary Blenny is native to the Western Pacific Ocean, specifically in the waters around the islands of Oualan and Yap.

Cautions

Canary Blennies have venomous fangs that are used for self-defense. Although their venom is not harmful to humans, it can cause pain and swelling. It is important to handle them with care.

Acclimation process

When introducing a Canary Blenny to a new aquarium, it is important to acclimate them slowly to prevent shock. This can be done by gradually introducing small amounts of water from the aquarium to their transport bag over a period of time.

All photos

Tap a photo to open the gallery viewer.