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Mussel (Modiolus modiolus)

Find Mussel across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified invertebrate listings before you buy.

Mussel
Photo: H. Zell · CC BY-SA 3.0
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Where to buy Mussel

ReefDock searches the following reef retailers for this invertebrate. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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  • Petco

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About Mussel

Modiolus modiolus is a large, dark purplish-brown to black bivalve with a robust, somewhat triangular shell reaching up to 6 inches. The shell bears radiating ridges and is often encrusted with other organisms; prominent byssal threads anchor it firmly to substrate.

Key facts

Notes
• Minimum 55 gallon tank • Maintain temperature range 50–65°F with strong water flow • Requires stable salinity 1.024–1.026 and pH 8.0–8.3 • Filter feeder; depends on plankton-rich, nutrient-dense water; do not use aggressive protein skimmers • Naturally cold-water species; unsuitable for typical tropical reef aquaria without chiller
Diet Details
Filter feeder consuming phytoplankton, zooplankton, and fine organic particles. Benefits from liquid phytoplankton or micro-foods daily in low-flow areas.
Type
Clam
Compatibility
Peaceful filter feeder compatible with most reef fish and invertebrates. Requires adequate water flow and benefits from calm tank-mates that won't disturb it.
Origin
Northern Atlantic Ocean, from the North Sea and Scandinavia south to the Mediterranean and off the coasts of Maine and Canada.
Family
Mytilidae
Appearance Description
Modiolus modiolus is a large, dark purplish-brown to black bivalve with a robust, somewhat triangular shell reaching up to 6 inches. The shell bears radiating ridges and is often encrusted with other organisms; prominent byssal threads anchor it firmly to substrate.
Water Parameters
Temperature: 50-65°F pH: 8-8.3 Salinity: 1.024-1.026
Max Size
3
Min tank size
55 gallons
Category
Clam
Care Level
Beginner

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell invertebrates directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current invertebrates listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible invertebrate listings — so you can see the conditions a invertebrate was raised in before you buy. Log this invertebrate on Reef Trak.

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