Live California blackworms (Lumbriculus variegatus) are a whole-food, biologically appropriate diet for aquatic animals. Their nutritional value is derived from intact tissues, natural fats, and complete amino acid composition, making them fundamentally different from processed feeds.
Macronutrient Composition
(Typical values, dry-matter basis)
- Crude Protein: 62–66%
- Crude Fat (Lipids): 8–11%
- Carbohydrates: 8–12%
- Ash (Minerals): 7–10%
- Fiber: <2%
Moisture (as fed): 80–85%
Protein & Amino Acids
Blackworms provide a complete essential amino acid profile, supporting:
- Muscle and tissue development
- Regeneration and wound healing
- Enzyme and hormone production
- Reproductive conditioning
Because the protein is delivered live and unprocessed, digestibility and uptake are exceptionally high.
Lipids & Fatty Acids
Natural fats supply:
- Readily available metabolic energy
- Essential fatty acids for cell membrane integrity
- Support for nervous system and organ function
These lipids are not oxidized or denatured as they often are in dried or frozen feeds.
Mineral Content
(Approximate ranges)
- Calcium: 0.4–0.7%
- Phosphorus: 0.8–1.2%
- Iron: 150–300 ppm
- Zinc: 50–120 ppm
These trace minerals support skeletal health, oxygen transport, immune response, and overall metabolic stability.
Digestibility & Bioavailability
Unlike pellets or flakes, blackworms retain:
- Natural enzymes
- Cellular water content
- Native nutrient structures
This results in faster digestion, reduced waste output, and lower stress on filtration systems when fed responsibly.
Nutritional Summary
Blackworms function as a complete nutritional food, not a treat or supplement. They can be used as a primary diet or as a conditioning food for growth, recovery, breeding, and overall vitality across a wide range of aquatic species.