Can Turtles Eat Bloodworms? Discover the Facts!

Bloodworms are a common supplemental food source used by many turtle owners. They are the larval form of the non-biting midge fly and have a high protein and fatty acid content that can benefit turtle health and growth. Bloodworms also offer turtles variety in their diet and can stimulate their natural foraging behavior.

As an aquatic food source, bloodworms are a convenient and readily available option for turtle owners to feed their shelled pets. However, it’s important to understand the potential benefits and risks of including bloodworms as part of a balanced diet for turtles. While they provide important nutritional value, bloodworms should only make up a portion of a turtle’s overall food intake.

This article provides an overview of bloodworms as a food source, including the advantages and potential downsides of feeding them to pet turtles. It explores what turtle species can eat bloodworms, proper feeding amounts based on age, and how to select high quality frozen, live, or freeze-dried bloodworm products. Proper feeding practices are vital to gain the benefits of bloodworms while avoiding potential health issues like obesity.

An Overview of Bloodworms

What Are Bloodworms?

Bloodworms are a type of aquatic worm in the class Oligochaeta. They are the larval stage of the midge fly, a small mosquito-like insect.

Bloodworms live in shallow freshwater ponds, lakes and slow-moving streams. They burrow in the mud or substrate and feed on microorganisms and detritus.

Nutritionally, bloodworms are high in protein, around 7-9% by dry weight. They also contain essential fatty acids like omega-3s and are a good source of minerals like iron, calcium, selenium and zinc. Bloodworms are naturally low in fat and carbohydrates.

Because of their high nutritional value, bloodworms are commonly used as a food source for both wild and captive fish, amphibians and some reptiles like turtles. Their natural behavior of burrowing also triggers foraging and hunting behaviors for many species.

Are Bloodworms Safe for Turtles?

Turtle Eat Bloodworms

When considering whether bloodworms are safe for turtles to eat, it’s important to be aware of the potential risks involved. While bloodworms can provide beneficial nutrition, they do pose some possible dangers that turtle owners should keep in mind:

  • Bacterial or Parasitic Contamination: Like any meat-based food for reptiles, frozen or live bloodworms can potentially be contaminated with bacteria such as salmonella or parasites. Always source bloodworms from a reputable supplier and avoid using wild-caught worms. Proper storage and hygiene when thawing and handling is also essential.

  • Impaction Risk: Bloodworms have tough exoskeletons that may be difficult for some turtles to digest, especially younger/smaller ones. Too many bloodworms can lead to an intestinal impaction, a potentially life-threatening blockage. It’s important to feed an appropriate amount for the size of the turtle.

  • Nutritional Imbalance: While nutritious, bloodworms should not make up the bulk of most aquatic turtles’ diets. A variety of feeder items is ideal for balanced nutrition. Relying too heavily on bloodworms could lead to vitamin/mineral deficiencies long-term.

  • Digestive Issues: The high protein content of bloodworms could also cause digestive upset if turtles eat too many. Diarrhea or vomiting is a sign to cut back on the amount of bloodworms being fed.

With proper care and moderation, bloodworms can be a beneficial supplemental food for most aquatic turtles. But be mindful of potential health risks, and vary the diet with other feeder items as well. Monitor turtles carefully when first introducing bloodworms to ensure they are tolerated well.

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Benefits of Bloodworms for Turtles

Underwater Turtle Hearing

Bloodworms can provide some key benefits as part of a balanced diet for many turtle species.

Two of the main advantages are:

  • High in Protein – Bloodworms are an excellent source of protein for turtles. Protein is crucial for a turtle’s growth and development. Most experts recommend protein make up 25-40% of a turtle’s total diet. Bloodworms contain over 80% protein content, giving them one of the highest protein levels among common turtle foods. The high protein content helps support muscle development, organ function, and overall health in turtles.

  • Appeal to Picky Eaters – Some turtles can be finicky about trying new foods. However, most turtles find bloodworms irresistible due to their taste and wiggly movements. Their appeal and palatability make bloodworms a great way to feed picky eaters and encourage them to accept a more varied diet over time. Even turtles that are normally disinterested in eating often get excited when offered bloodworms. Taking advantage of their appetite for bloodworms can be helpful when transitioning fussy turtles onto healthier staple foods.

Bloodworms make an excellent supplemental food in a turtle’s diet thanks to their dense protein content and universal appeal to most turtle species. They provide a healthy boost of protein coupled with strong feeding motivation. Including bloodworms as part of a balanced and varied diet can support a turtle’s nutritional needs and overall health.

Best Practices for Feeding Bloodworms

Bloodworms for Turtle

When feeding bloodworms to your pet turtle, there are a few best practices to follow for the health and safety of your turtle. This includes proper storage and frequency of feeding.

  • Store bloodworms properly – Whether frozen, live, or freeze-dried, bloodworms need proper storage to prevent spoilage and maintain nutritional value. Frozen and live worms should be stored in the refrigerator or freezer. Once thawed, use within 1-2 days. Freeze-dried worms can be stored in an airtight container at room temperature for up to 9 months.

  • Limit bloodworm feedings – While nutritious, bloodworms should only make up a small part of a turtle’s diet. For younger turtles under 3 years old, limit feedings to 2-3 times per week. Older adult turtles should only get bloodworms as a treat once a week or less. This prevents overreliance on one food and potential obesity issues.

  • Soak freeze-dried worms first – If feeding freeze-dried bloodworms, always soak in tank water for 5-10 minutes first. This helps rehydrate them and prevents digestive issues. Their expanded size after soaking will also help prevent overfeeding.

  • Mix with other foods – It’s best to mix bloodworms with other healthy turtle foods like dark leafy greens, commercial turtle pellets, and occasional treats like shrimp. This creates a balanced diet.

  • Watch portion sizes – The amount fed depends on the size and age of your turtle. But a general rule is pieces no larger than the turtle’s head, and no more than they can consume within 5-10 minutes. Remove any uneaten worms to prevent overfeeding later.

By following proper storage, moderation, and preparation of bloodworms, you can safely provide them as an occasional nutritious supplement to your turtle’s regular diet. But be sure to rely more heavily on greens and pellets as the dietary staples.

Which Turtle Species Can Eat Bloodworms?

Types of Turtles

Most turtle species are able to eat bloodworms, provided the worms are the right size for the turtle.

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Here’s an overview of some of the most common pet turtle species and their ability to eat bloodworms:

  • Red-eared slider turtles – Can eat bloodworms. Bloodworms should be no longer than the space between a red-eared slider’s eyes.

  • Painted turtles – Painted turtles can eat bloodworms. Smaller worms are best for younger/smaller painted turtles.

  • Box turtles – Box turtles can eat bloodworms, but they may not accept them readily. Try mixing bloodworms in with foods box turtles prefer like fruits, veggies, or crickets.

  • Map turtles – Most map turtle species will readily consume bloodworms. Stick to an appropriate worm size for the turtle.

  • Softshell turtles – Can eat bloodworms as part of a varied diet. Make sure softshells don’t ingest any substrate when feeding bloodworms.

  • Musk turtles – Will eat bloodworms, but do so infrequently in the wild. Use bloodworms sparingly for musk turtles.

  • Snapping turtles – Larger snapping turtle species can eat bloodworms as a supplemental feeder, but may ignore or reject them. Hatchling snapper turtles can eat tiny bloodworm pieces.

  • Mud and musk turtles – These small turtle species can eat small bloodworm pieces, but these worms make up little of their natural diet.

In general, aquatic turtle species are the best candidates for regularly eating bloodworms as part of a balanced diet. Land dwelling turtles like box turtles may be less interested in bloodworms. Always pick appropriately sized worms for the turtle’s head/mouth size.

Ideal Bloodworm Diet by Turtle Age

How Big Do Red Eared Sliders

A turtle’s age plays an important role in determining the ideal amount of bloodworms to offer. Baby and juvenile turtles should be fed bloodworms more sparingly than adult turtles.

Baby Turtles

For the first year of a baby turtle’s life, bloodworms should make up no more than 10-20% of their diet. Baby turtles have small digestive systems and can easily become overloaded with too much protein from bloodworms. It’s best to feed baby turtles a varied diet consisting mainly of commercial turtle pellets and treats like bloodworms offered 1-2 times per week.

Juvenile Turtles

As juvenile turtles grow over their first 2-4 years, they can begin eating more protein-rich foods like bloodworms. Juvenile turtles can be fed bloodworms 2-3 times per week, making up around 30% of their overall diet. Combine bloodworm feedings with leafy greens, vegetables, and commercial turtle pellets for balanced nutrition.

Adult Turtles

Adult turtles can derive great benefits from bloodworms and handle increased protein levels. Feed adult turtles bloodworms 2-4 times per week, comprising up to 40% of their diet. Still combine bloodworms with vegetables, greens, and pellets to provide complete nutrition. Monitor your turtle’s weight and energy levels to avoid overfeeding.

For turtles of all ages, it’s ideal to combine bloodworms with other nutritious foods, not feed exclusively bloodworms. Rotate feedings with leafy greens, vegetables, fruits, commercial pellets, and treats to ensure balanced nutrients. Pay close attention to each turtle’s unique needs and adjust bloodworm amounts accordingly.

Frozen vs. Live vs. Freeze-Dried Bloodworms


There are three main options when it comes to feeding bloodworms to turtles: frozen, live, and freeze-dried. Each has its own advantages and disadvantages to consider.

Frozen Bloodworms

Frozen bloodworms are often considered the best option for a few reasons:

  • Nutritional value is retained better through the freezing process compared to drying
  • Very convenient – easy to thaw, portion, and feed as needed
  • Lower risk of introducing pathogens or parasites compared to live worms
  • Often more affordable than live or freeze-dried

The main downside is that some picky eaters may prefer the movement of live worms.

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Live Bloodworms

Live bloodworms trigger natural hunting instincts and are favored by some turtles. Benefits include:

  • Movement stimulates appetite in shy or picky eaters
  • Freshest option – no freezing or drying involved
  • Provides enrichment through natural foraging behaviors

However, sourcing live bloodworms can be challenging, and they carry higher risks of parasites or diseases. Live worms also have a very short shelf life.

Freeze-Dried Bloodworms

Freeze-dried bloodworms retain more nutrients than air-dried. Pros are:

  • Very long shelf life compared to live or frozen
  • Creates less mess as they don’t need thawing
  • Allows for precise portion control

On the downside, freeze-drying removes more nutrients than freezing. The lack of movement can also cause picky eaters to ignore them. They are also one of the more expensive options.

Overall, frozen bloodworms offer the best balance of nutrition, convenience, and safety for most turtle owners. But live or freeze-dried can also be fed in moderation or rotation.

Risks of Overfeeding Bloodworms

Pet Turtles

While bloodworms can be a nutritious treat for turtles, overfeeding them can lead to health issues. Bloodworms are high in protein and fat, but low in the vitamins and minerals turtles need from vegetables. An excess of protein and fat without proper nutrients can cause health problems.

Feeding too many bloodworms can lead to obesity and fatty liver disease in turtles. The high fat content causes rapid weight gain. Obesity stresses the turtle’s organs, decreases mobility, and lowers quality of life. Fatty liver disease disrupts the normal metabolism of fat and can be fatal.

Another risk is hypervitaminosis A. Frozen and freeze-dried bloodworms are very high in vitamin A. Excess vitamin A is stored in the liver and can reach toxic levels. Symptoms include swelling of the eyes, lethargy, lack of appetite, and peeling of the shell. It can lead to deformity in young turtles.

Additionally, overfeeding bloodworms can cause turtles to refuse vegetables and become malnourished. Turtles focused on the bloodworms may reject greens and veggies, missing key nutrients. This can result in poor shell growth and metabolic bone disease.

To avoid health risks, bloodworms should be limited treats. Follow recommended feeding guidelines for the amount and frequency of bloodworms. A varied diet high in vegetables with occasional bloodworms is ideal. Monitor turtle weight and health when offering bloodworms.


Overall, bloodworms can be a safe and nutritious part of a turtle’s diet if fed properly. Bloodworms provide a good source of protein, fat, and other essential nutrients that aid a turtle’s growth and health. They can be an especially beneficial food for younger, growing turtles that need more protein. However, moderation is key when feeding bloodworms. They should be given as only a supplemental part of a varied diet, not the main staple food. Adult turtles likely only need bloodworms once or twice a week.

Bloodworms are generally safe for most aquatic turtle species. Red-eared sliders, painted turtles, map turtles, and softshells can all eat them. However, strict herbivores like box turtles should avoid them. When buying bloodworms, opt for quality frozen, freeze-dried, or refrigerated products and avoid live ones which pose more health risks.

Only feed an appropriate amount based on the turtle’s size and age. Soak freeze-dried worms before feeding as well. While nutritious in moderation, too many bloodworms can lead to detrimental health effects for turtles like metabolic bone disease. Overall, bloodworms can enrich a turtle’s diet but need to be fed properly alongside greens, pellets, and other foods.

Samantha Jenkins
Samantha Jenkins

I am Samantha Jenkins, a devoted turtle enthusiast and conservationist. My love for nature and my special connection with turtles have shaped my life's purpose. In my free time I like to travel and hang out with friends!

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