Blenny Midas (Ecsenius Midas)

Midas Blenny (Ecsenius midas)

The Midas Blenny is often called the "Golden Blenny" for its stunning, solid-gold coloration and its graceful, eel-like swimming motion. Unlike many other blennies that spend their time perching on rockwork, the Midas is an active swimmer that spends much of its day in the water column, often mimicking the behavior and movement of Anthias shoals.

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Key Information

• Common Names: Midas Blenny, Golden Blenny, Persian Blenny

• Scientific Name: Ecsenius midas

• Origin: Indo-Pacific and Red Sea (Red Sea specimens are often a deeper orange)

• Max Size: 10–13 cm (approx. 4–5 inches)

• Lifespan: 5–8 years

• Temperament: Peaceful; highly personable and interactive

• Diet: Omnivore/Planktivore – Requires a mix of meaty foods and marine algae

• Care Level: Easy

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Appearance & Identification

The Midas Blenny is prized for its high-visibility color and elegant form:

• Golden Body: Features a brilliant, deep yellow-to-orange body that can shift in intensity based on the fish's mood or environment.

• Distinctive Eyes: Possesses large, blue-rimmed eyes and small cirri (whisker-like appendages) above the eyes.

• Blue Accents: Many specimens show a subtle electric blue or violet trim along the edges of their fins, particularly the dorsal and anal fins.

• Swimming Style: Known for its "undulating" swimming style, moving through the water with the grace of a small sea serpent.

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Behavior & Tank Compatibility

• The Mimic: In the wild, the Midas Blenny often joins groups of Lyretail Anthias. It mimics their swimming to blend in and avoid predators, while also benefiting from the "safety in numbers" the shoal provides.

• Reef Safe: 100% Reef Safe. They are perfect for coral-heavy environments as they do not pick at corals or clams.

• Aggression: Generally peaceful but can be territorial toward other blennies or similarly shaped fish (like Firefish) in smaller tanks. It is best to keep only one per tank.

• Social Interaction: This blenny is known for its high intelligence. It will often pick a favorite "bolt hole" in the rockwork and watch the room, appearing to "interact" with its owner through the glass.

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Ideal Tank Setup

• Tank Size: A minimum of 115L (30 Gallons) is recommended.

• Rockwork: Provide plenty of live rock with small caves and crevices. The Midas Blenny loves to back into its favorite hole tail-first, leaving only its head poking out to watch the tank.

• Lid: Like all blennies, the Midas is a notorious jumper. A secure, tight-fitting lid or mesh top is absolutely mandatory.

• Feeding: As active swimmers, they should be fed 2–3 times daily. Offer a variety of frozen mysis, enriched brine shrimp, and spirulina-based flakes or pellets.

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Why Choose the Midas Blenny?

The Midas Blenny is arguably the most "personable" fish you can add to a reef. It provides a constant pop of bright gold and a level of activity that most bottom-dwelling blennies lack. Its hardiness and ease of care make it an ideal choice for both beginners and experts. If you already have a group of Anthias, the Midas Blenny will often join their ranks, creating a beautiful and natural-looking social dynamic in your aquarium.