Saltwater Fish
Ecsenius gravieri
Ecsenius gravieri - Red Sea Mimic Blenny

Ecsenius gravieri (Red Sea Mimic Blenny)

Species Description…

Scientific Name: Ecsenius gravieri
Common Name: Red Sea Mimic Blenny
Species Group: Blenny
Habitat: Reef Safe
Care Level: Beginner
Temperament: Peaceful
Diet Type: Omnivore
Role in Aquarium: Community Fish
Max Fish Length: 3 (inches)
Min Aquarium Size: 30 (gallons)
Native Range: Indo-Pacific, including the Red Sea, Indonesia, and the Philippines

Overview

  • Native to the Red Sea, typically inhabiting coral-rich reef slopes and rocky coastal areas.
  • Known for its subtle yet attractive coloration, featuring shades of brown, tan, or olive with lighter belly areas, perfectly adapted for camouflage.
  • An intelligent and inquisitive species, frequently observing its surroundings from elevated perches on corals and rocks.
  • Generally peaceful but capable of defending its territory from similarly sized or shaped fish.
  • Thrives in aquariums that replicate its natural reef habitat, complete with abundant live rock and stable water quality.

Feeding

  • Primarily herbivorous, grazing on algae and organic material found naturally growing on reef surfaces.
  • Diet in captivity should include marine algae, dried seaweed sheets, spirulina flakes, and specialized herbivore pellets.
  • Occasionally accepts small quantities of frozen mysis shrimp or enriched brine shrimp for dietary variety.
  • Benefits from frequent, small feedings throughout the day to mimic its natural grazing behavior.
  • A diet rich in marine algae promotes vibrant coloration, robust health, and overall vitality.

Habitat

  • Typically inhabits coral-rich reef slopes and shallow rocky environments abundant in marine algae.
  • Often observed perched atop coral outcroppings or nestled within small crevices, serving as strategic vantage points.
  • Aquarium setups should replicate these conditions, offering plenty of live rock for grazing and numerous hiding spaces.
  • Stable water parameters, moderate water flow, and efficient filtration are crucial for maintaining optimal conditions.
  • Providing various hiding spots and natural grazing surfaces supports its comfort and encourages natural behaviors.

Fish Care

  • Optimal water temperature: 72-78°F (22-26°C), essential for maintaining healthy metabolism and immune functions.
  • Preferred pH range: 8.1-8.4, with stable salinity levels at 1.020-1.025.
  • Regular water changes, consistent water monitoring, and effective filtration systems are necessary for optimal health.
  • Generally reef-safe and poses minimal threat to corals or most ornamental invertebrates.
  • Providing stable conditions and consistent algae availability helps minimize stress and maintains long-term health.

Compatibility

  • Peaceful by nature, best kept with similarly sized, non-aggressive marine species.
  • Compatible with clownfish, gobies, smaller wrasses, cardinalfish, and other reef-safe community species.
  • Should not be housed with highly aggressive or territorial species that may cause stress or competition for resources.
  • Thrives in peaceful reef community tanks, where it contributes positively through beneficial algae control.
  • Ensuring ample grazing areas and hiding spots supports harmonious relationships with other tank inhabitants.

Aquarium Behavior

  • Active and observant, frequently perched atop rock structures, carefully surveying its surroundings.
  • May occasionally exhibit territorial behaviors, particularly when defending favored perching spots.
  • Adapts readily to aquarium environments, gradually becoming confident and visible with stable conditions.
  • Providing structured rockwork and ample natural algae growth encourages natural foraging behaviors and reduces stress.
  • Over time, it typically recognizes and interacts positively with its caretaker, especially during feeding sessions.