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Midas Blenny
Ecsenius midas
Animalia›Chordata›Actinopterygii›Blenniidae
📍 Indo-Pacific, Red Sea, East Africa
Brilliant golden-yellow with a flowing, eel-like body. Often mimics Lyretail Anthias in colour. Perches on rockwork and darts into crevices when startled — reef-safe and entertaining to watch.
Care Guide
Diet
Midas Blennies are omnivores that require a varied diet of small frozen foods and quality flake foods. Feed mysis shrimp, brine shrimp, and small copepods once daily, supplemented with high-quality marine flakes and occasional algae-based foods. They will also graze on natural algae growth and biofilm in the aquarium, making them excellent for reef maintenance.
Behavior
These blennies are semi-aggressive bottom-dwellers that spend most of their time perched on rockwork, darting quickly into crevices when startled. They are highly entertaining to observe and relatively peaceful with non-competing species, though they may chase smaller fish or become territorial with other blennies. Their eel-like body and brilliant golden coloration make them visually striking additions to any reef setup.
Breeding
Breeding Midas Blennies in captivity is extremely difficult and rarely achieved in home aquariums. They require very specific environmental conditions and pair bonding that are challenging to replicate. Most specimens in the hobby are wild-caught, and successful captive breeding is not documented in standard aquarium literature.
Tank Mates
Similar reef habitat preference and peaceful temperament; occupy different zones
Reef-safe invertebrates that occupy different ecological niches
Peaceful fish with similar water requirements; nocturnal behavior reduces competition
Small reef-safe goby with compatible temperament and dietary needs
Reef-safe algae grazer that won't compete for food or territory
Common Diseases
Marine Ich (White Spot Disease)
White spots on body and fins, rapid breathing, flashing against rocks
Raise temperature gradually to 28-29°C, maintain excellent water quality, consider copper-based treatments or hyposalinity in quarantine
Bacterial Infections
Torn fins, lesions on body, cloudy eyes, lethargy
Improve water quality, perform regular water changes, use broad-spectrum antibiotics if severe; quarantine infected fish
Parasitic Infections
Excessive scratching, weight loss, visible parasites, clamped fins
Quarantine and treat with appropriate antiparasitic medications; maintain pristine water conditions
Head and Lateral Line Erosion (HLLE)
Pitting or erosion on head and lateral line, loss of appetite
Improve diet with vitamin-enriched foods, enhance water quality, ensure adequate nutrition with varied frozen foods
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Quick Facts
- pH
- 8.1–8.4
- diet
- omnivore — zooplankton, mysis, algae
- maxSize
- 5 inches
- minTankSize
- 20 gallons
- temperature
- 72–82°F (22–28°C)
Temperature
72–82°F
22–28°C