Collection: Blenny

Bicolour Blenny (Ecsenius bicolor)

The Bicolour Blenny (Ecsenius bicolor) is a charming and vibrant marine fish, known for its striking two-tone coloration with a bold blue or purple front half and a bright orange or yellow rear half. With its playful personality and algae-grazing habits, the Bicolour Blenny is both an entertaining and functional addition to reef or fish-only aquariums. Its small size and peaceful nature make it a great choice for marine aquarists of all experience levels.

Product Details

• Species: Ecsenius bicolor
• Common Names: Bicolour Blenny, Two-Coloured Blenny
• Origin: Indo-Pacific Region (Indonesia, Fiji, Great Barrier Reef)
• Diet: Herbivore
• Maximum Size: 10 cm (4 inches)
• Temperament: Peaceful
• Care Level: Easy

Care Guidelines

Marine Aquarium Setup:
The Bicolour Blenny thrives in tanks of at least 100 liters with plenty of live rock for grazing and hiding. These fish enjoy perching on rock surfaces and darting into crevices when startled. Provide a well-established aquarium with algae growth, as they are natural algae grazers. A secure lid is recommended, as they are known to jump.

Water Parameters:

• Temperature: 24°C – 27°C
• pH Range: 8.1 – 8.4
• Salinity: 1.023 – 1.025 SG
• Water Hardness: 8 – 12 dKH

Diet:
Bicolour Blennies are primarily herbivores and thrive on a diet rich in plant matter. Offer marine algae, spirulina, and herbivore-specific pellets or flakes. Supplement their diet with blanched vegetables like spinach or zucchini, and they may occasionally nibble on naturally occurring algae in the tank. Feed them 2–3 times daily in small amounts.

Behavior and Compatibility:
This peaceful fish is an excellent addition to community tanks. It gets along well with other peaceful or semi-aggressive species, such as clownfish, gobies, and wrasses. Avoid housing them with aggressive fish or other bottom-dwelling species that may compete for hiding spots. They are reef-safe and pose no threat to corals or invertebrates.

Growth and Maintenance:

Bicolour Blennies grow up to 10 cm and are hardy with proper care. Perform regular water changes and maintain stable water parameters to ensure their health. Their algae-grazing behavior helps control algae growth, making them a practical and decorative addition to marine aquariums.

Availability:
Bicolour Blenny (Ecsenius bicolor) is available at Cradle Coast Pet & Aquarium. Visit or contact the store to check availability and bring home this playful and colorful fish today!

Due to variations within species and age of fish, your item may not look identical to the image provided.

The Triplespot Blenny is a peaceful species that will only show aggression to fish with a similar shape. Triple Spot Blennies have a mottled appearance, combining green and dark brown over their body. They have a paler stomach, usually light tan/cream, and the dorsal fins have hints of red and yellow.

Triple Spot Blennies reproduce with the female spawning demersal (sinking to the bottom) eggs into a nest on the substrate. The male will guard the eggs until hatching.

It is relatively easy to take care of Triplespot Blennies making them suitable for beginner aquarists. They are easy to get with specimens generally available.

Triplespot Blennies are gaining popularity, they have an inquisitive, entertaining personality and are active around the tank as they search for algae.

In the wild, their natural habitat is on rocky rubble or coral reefs, with plenty of algae and opportunities to perch. They usually stay between a depth of 1-25 meters. They are a small species with adults growing to a length of 4 inches (10 centimetres).

Their natural habitat is in South Asia, Indonesia, the Philippines, the Western Pacific, Great Barrier Reef, Fiji, and Tonga.

Tank Recommendations for the Triplespot Blenny

The tank size for housing them should be at least 30 gallons (113.5 litres).

The Triplespot Blenny should be introduced to an established tank that contains plenty of algae for it to graze on.

A suitable tank should have a sand substrate, with plenty of live rock for sheltering, perching, and grazing. Blennies can jump out of the tank, so a secure lid is recommended.

Suitable Tank Buddies

Triplespot Blennies are peaceful with most other species but will show aggression to similarly shaped fish. Only mated pairs should be housed together.

Overly aggressive species are not recommended as they may bully and harass Blennies.

Usually Compatible

Triplespot Blennies can co-habit with a variety of fish. Suitable tank buddies include Anthias, Angelfish, Tangs, Butterflyfish, Clownfish, Puffers, Gobies, and reef-safe Wrasses.

Sometime Compatible

Triplespot Blennies will show aggression to conspecifics of the same sex. Caution is also advised with Batfish, Basslets, Dragonets, Cardinalfish, Hogfish, Grunts/Sweetlips, Pseudochromis, Squirrelfish, Parrotfish, and Triggerfish.

Rarely Compatible

Triplespot Blennies should not be housed with larger aggressive fish or fish that can swallow them. Avoid Eels, Anglers/Frogfish, Lions/Scorpions, Groupers, or Sharks/Rays. Delicate grazers such as Seahorse/Pipefish should also be avoided.

Feeding Your Triplespot Blenny

Triplespot blennies are herbivores. They enjoy consuming algae that grow naturally in aquariums. Their diet should also be supplemented with live and prepared marine algae, herbivorous food flakes and pellets, and vegetable products such as spirulina. They should be fed twice daily, just enough for them to finish eating in a couple of minutes.