Description
Midas Blenny – Ecsenius midas
Ecsenius midas, commonly known as the Midas Blenny, is a striking and highly charismatic reef fish known for its bold golden coloration and unique swimming behavior. Unlike most blennies that remain perched on rockwork, the Midas Blenny often swims freely in the water column, mimicking the movement and behavior of anthias. Its shimmering gold to deep yellow body, accented by electric blue eye rings, makes it an eye-catching addition to reef aquariums while still retaining the playful personality blennies are loved for.
Origin: Maldives (Indian Ocean)
Depth: 5–40 m (15–130 ft)
Lighting: Moderate to high; brighter lighting enhances its metallic gold coloration
Flow: Moderate; enjoys gentle to moderate currents and open swimming areas
Tank Placement: Mid-water to rockwork; alternates between open swimming and retreating into caves or crevices
Temperature: 74–80°F (23–27°C)
Salinity: 1.023–1.026 SG
pH: 8.1–8.4
Diet: Omnivorous – feeds on zooplankton, small crustaceans, and algae; thrives on mysis shrimp, brine shrimp, pellets, and high-quality prepared foods
Temperament: Peaceful to semi-aggressive; generally well behaved but may defend its chosen cave from similar-shaped fish
Size: Up to 15 cm (6 inches)
Care Level: Easy – hardy, adaptable, and suitable for most reef aquariums
Compatibility: Reef-safe; compatible with corals and most peaceful to semi-aggressive fish; avoid housing with very aggressive tankmates that may outcompete it
