Chaetoceros muelleri

Chaetoceros muelleri is a marine diatom widely used in aquaculture and advanced reef feeding programs. As a silica-based microalga, it differs structurally and nutritionally from flagellate species like Tisochrysis or Pavlova, offering unique benefits in live feed production.

What Makes It Valuable?

1. Strong EPA Content
This diatom is rich in EPA (eicosapentaenoic acid), an essential omega-3 fatty acid that supports:

• Larval fish development

• Crustacean growth

• Copepod reproduction

• Overall marine organism health

While it contains little DHA compared to golden algae, its EPA contribution makes it a powerful component in enrichment rotations.

2. Excellent for Early Life Stages

Chaetoceros muelleri is commonly used to feed:

• Bivalve larvae (clams, oysters, scallops)

• Copepods

• Rotifers

• Shrimp larvae

Its size and nutritional density make it particularly valuable during sensitive early developmental stages.

3. Silica Cell Wall Structure

As a diatom, it possesses a silica frustule (cell wall). This provides structural rigidity but also means:

• It requires silicate in culture

• It may be less directly digestible for some reef organisms compared to soft-bodied flagellates

• It is often best used to feed zooplankton, which then pass nutrients up the food chain

Role in Reef Systems

In reef aquariums, Chaetoceros muelleri is typically used to:

• Enrich copepod cultures

• Diversify phytoplankton blends

• Improve EPA levels in live feeds

Because diatoms are part of natural marine plankton communities, incorporating them into feeding programs can help create a more ecologically balanced micro-food web.

Storage & Use Tips

• Keep refrigerated and shake thoroughly before dosing.

• Use in combination with DHA-rich species for balanced nutrition.

• Dose conservatively to prevent nutrient accumulation.

Chaetoceros muelleri is a foundational diatom in commercial hatcheries and advanced reef nutrition strategies. When combined with other phytoplankton species, it contributes to a more complete fatty acid profile and stronger live feed performance.