🐠 Smith's Blenny (Meiacanthus smithi)
🐠 Smith's Blenny (Meiacanthus smithi)
A Pearl-White Body With a Bold Black Stripe • A Semi-Pelagic Swimmer That Hovers Freely in Open Water • Protected From Larger Fish by Its Venomous Reputation
📋 Smith's Blenny, also known as the Disco Blenny or White Blenny, has an elegant pearl-white body with a bold black stripe running from the chin through the eye and along the dorsal fin to the tail.
It comes from a wide range across the Indo-Pacific, belonging to the genus Meiacanthus, the true "fang blennies." Unlike most blennies, which perch on rock, this species is semi-pelagic with a well-developed swim bladder, hovering freely in open water and darting into rockwork only when it needs to hide. Every Smith's Blenny we ship is feeding well.
It carries a mildly venomous bite delivered through grooved canine teeth, used purely defensively against predators, not offensively toward tankmates, and its venomous reputation actually makes it safer to house alongside larger or more assertive fish that would otherwise view it as prey. The bite is not dangerous to people, though it can cause a mild, painful welt, so never attempt to hand feed this species. It's fully reef safe and peaceful toward unrelated tankmates, though it can be territorial toward other blennies or similarly shaped fish in a smaller tank. It reaches up to 8.5cm, so a 115L tank suits it well.
💡 Highlights
🎨 Pearl-White Body With Bold Black Stripe: An elegant, distinctive pattern
🏊 Semi-Pelagic: Hovers in open water rather than perching, unlike most blennies
🛡️ Defensive, Not Aggressive: Mild venom used purely for self-protection
🌿 Fully Reef Safe: Won't harm corals or invertebrates
🧠 Beginner Friendly: Hardy and easy to keep once settled in
🧾 A Quick Look at the Smith's Blenny
📛 Common Name: Smith's Blenny (Disco Blenny, White Blenny, Smith's Fangblenny)
🔬 Scientific Name: Meiacanthus smithi
👨👩👧 Family: Blenniidae
🌍 Origin: Indo-Pacific
📏 Max Size: Up to 8.5cm (≈ 3.3")
🧂 Specific Gravity: 1.020-1.025
🌡️ Temperature Range: 22-26°C (72-78°F)
🧠 Care Level: Beginner
💖 Temperament: Peaceful; territorial toward similarly shaped fish
🌿 Reef Safe: Yes
🏠 Min Tank Size: 115 L (≈ 30 gallons)
📌 Tank Level: Mid level, free-swimming
🧬 Stock Type: Frequently captive-bred; often preferred over wild-caught stock
⏳ Lifespan: 3-5 years
🍽️ Diet: Omnivore (zooplankton, meaty foods, algae-based foods)
🐣 Reproduction: Egg layer; male guards eggs within live rock

















