Forktail Blenny - Meiacanthus atrodorsalis
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The Forktail Blenny (Meiacanthus atrodorsalis) is a small, striking blenny with a purple-blue head, a bold black stripe across the eye, and a vibrant yellow-orange tail. This peaceful and hardy fish adds color and dynamic movement to reef aquariums.
Common Name: Forktail Blenny
Scientific Name: Meiacanthus atrodorsalis
Family: Blenniidae
Size: Up to 3 inches (7.5 cm)
Temperament: Peaceful
Difficulty: Easy
Reef Safe: Yes
Native Region: Found throughout the Western Pacific, including Indonesia and the Philippines, typically inhabiting shallow coral reefs and rocky crevices.
Tank Size: Minimum of 20 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate/Decor: Provide live rock with crevices and algae-covered surfaces for grazing and hiding.
• Behavior: Peaceful and active; may perch on rocks or coral surfaces.
• Diet: Omnivorous—feeds on algae, small crustaceans, flakes, and frozen foods.
• Algae Control: Helps control film algae in the aquarium.
• Tankmates: Compatible with most peaceful reef fish; avoid aggressive species that may harass the blenny.