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Description
Barnacle Blenny Acanthemblemaria MacrospilusOverview The Barnacle Blenny is a charismatic and quirky marine fish known for its comical expressions, darting movements, and fascinating behavior. These small, tube dwelling blennies are often seen poking their heads out of barnacles, rock crevices, or coral holes, making them highly entertaining to observe. Despite their small size, they exhibit big personalities, often showing curiosity and territorial displays toward nearby fish or even their
OverviewThe Barnacle Blenny is a charismatic and quirky marine fish known for its comical expressions, darting movements, and fascinating behavior. These small, tube-dwelling blennies are often seen poking their heads out of barnacles, rock crevices, or coral holes, making them highly entertaining to observe. Despite their small size, they exhibit big personalities, often showing curiosity and territorial displays toward nearby fish or even their keepers.
Origin
Native to the Eastern Pacific Ocean, Barnacle Blennies are most commonly found along the coastlines of Mexico, particularly in the Gulf of California. They inhabit shallow reef environments and rocky intertidal zones, often sheltering in empty barnacle shells or other small crevices in coral rubble and rocky substrates.
Feeding
In the wild, Barnacle Blennies feed primarily on zooplankton and other tiny organisms drifting in the water column. In captivity, they accept a range of finely sized meaty foods:
Live or frozen mysis shrimp
Baby brine shrimp
Copepods
High-quality marine micro pellets
Finely chopped seafood or enriched frozen blends
Feed small amounts 1–2 times daily, making sure food drifts near their hiding spots for easy capture.
Tank Mates
Barnacle Blennies do best in peaceful, reef-safe community tanks with other non-aggressive species. Ideal tank mates include:
Gobies
Clownfish
Cardinalfish
Dwarf wrasses (peaceful species)
Small reef-safe invertebrates (such as cleaner shrimp)
Avoid housing them with large or highly territorial species, especially those that may compete for similar shelter or harass the blenny in its burrow.
Aggression
While generally peaceful, Barnacle Blennies can be territorial—particularly toward other blennies or fish that invade their space. They may display fin-flaring or quick lunges from their burrow to intimidate rivals. It's best to keep only one Barnacle Blenny per tank unless housed in a very large system with ample hiding spots.
Experience Level
Beginner to intermediate. Barnacle Blennies are hardy and relatively undemanding as long as they have appropriate hiding spots and stable, clean water. Their unique behavior makes them a favorite for nano reef tank enthusiasts and seasoned aquarists alike.
Water Parameters
Temperature: 22–27°C (72–80°F)
pH: 8.1–8.4
Salinity: 1.023–1.025
dKH: 8–12
Tank Size: Minimum 10 gallons (nano reef suitable, with strong emphasis on available hiding spots)
Special Notes
Provide multiple small crevices, shells, or barnacle clusters as shelter.
They spend most of their time in their burrow, darting out to feed or chase away intruders.
They are reef-safe and won’t harm corals or invertebrates.
Their expressive faces and peeking behavior make them highly entertaining additions to a reef aquarium.
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The only option for reactive skin
I have EXTREMELY sensitive skin that breaks out in either a rash or acne with anything i try to put on it. This is the only lotion i can use. My sister is the same. Anytime i switch to something cheeper, i eventually come back to this!
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Reviewed in the United States on April 5, 2026
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Works keeping face calm
It works in keeping my face from being so red all the time.
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Reviewed in the United States on April 20, 2026
★★★★★ 1
FAKE! Caused burning stinging and pain. AVOID
Counterfeit product-avoid! Don’t buy it from here, get the actual product from Bioderma directly. I used this and it made my face sting, itch and turn a bright red. Then came the BURNING! After avoiding it for a week my face is finally healing. I didn’t notice the horrible packaging until it was too late—compare the photo of the product I got to the actual product from Bioderma and you’ll see the difference.
It is extremely unethical for a seller to send FAKE products that cause PAIN and redness all to make a dollar. Not cool.
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Reviewed in the United States on April 15, 2026
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Cumple con las expectativas
Crema ligera de rápida abosrcion. No sé percibe muy rápido que calme el enrojecimiento de la piel
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Reviewed in the United States on May 20, 2026