Scartella cristata (Molly Miller Blenny) | Algae-Eating Marine Fish for Reef Tanks

The Scartella cristata, commonly known as the Molly Miller Blenny, is a hardy and beneficial marine fish, valued for its natural role in controlling algae and detritus in reef aquariums. Native to the shallow reefs of the Western Atlantic and Mediterranean, this blenny is easily recognized by its speckled body and distinctive frontal crest. Active and curious, it is an excellent choice for aquarists looking for both a functional and engaging fish.

Key Benefits:

✔ Effective algae grazer – Helps control unwanted algae growth.

✔ Hardy and easy to care for – Suitable for beginners and experts alike.

✔ Reef-safe – Coexists well with corals and other peaceful fish.

✔ Active and inquisitive behavior – Constantly exploring and interacting with surroundings.

✔ Helps keep substrate clean – Feeds on detritus and small invertebrates.

Technical Specifications:

• Scientific Name: Scartella cristata

• Average Adult Size: 8-10 cm

• Origin: Western Atlantic, Mediterranean

• Ideal Temperature: 22-28°C

• Salinity: 1.023 – 1.025

• pH: 8.1 – 8.4

• Lighting: Moderate to strong

• Water Flow: Moderate to strong (prefers well-oxygenated environments)

Care Instructions & Recommendations:

1️⃣ Compatibility: Peaceful but territorial with its own kind, best kept alone or in pairs.

2️⃣ Feeding: Opportunistic herbivore, primarily eats algae, small crustaceans, and varied marine foods.

3️⃣ Behavior: Active and playful, enjoys perching on rocks and observing its surroundings.

4️⃣ Acclimation: Drip acclimation recommended to minimize stress.

5️⃣ Maintenance: Provide rocks and hiding spots for natural behavior.