Complete Care Guide for Musk Turtles｜Charm and Care Methods of Small Aquatic Turtles

Musk turtles are a group of small aquatic turtles native to North America, named for the distinctive odor they secrete from their musk glands. Several species, including the Common Musk Turtle (Sternotherus odoratus), are popular pet reptiles in Japan and are known for being beginner-friendly due to their compact size and hardy constitution. This article provides a detailed explanation of musk turtle care methods from the basics to health management.

Types of Musk Turtles

The main species of musk turtles distributed as pets in Japan are as follows:

Common Musk Turtle (Sternotherus odoratus): The most commonly distributed species. Extremely small even as adults, with a carapace length of 8-14 cm. Native to the southeastern United States. The carapace is rounded with black to brown coloring.

Razorback Musk Turtle (Sternotherus carinatus): Characterized by a distinct keel (ridge) in the center of the carapace. Adults reach carapace lengths of 10-15 cm. Slightly larger than the Common Musk Turtle.

Flattened Musk Turtle (Sternotherus depressus): Has a flattened head and keeled carapace. Somewhat rare with a tendency toward higher pricing.

Keelback Musk Turtle (Sternotherus minor): Young individuals have a prominent keel on the carapace that becomes flattened with maturity.

All species share similar basic care methods, and this article focuses primarily on the Common Musk Turtle.

Care Setup

Tank Size

Although Common Musk Turtles are small, they require adequate space.

Single turtle care: 45-60 cm tank (approximately 60L of water is ideal)

Multiple turtle care: Provide a larger tank according to the number of turtles. Aim for 20-30L or more per turtle.

Water depth: Since these semi-aquatic turtles prefer swimming, a water depth of 3-5 times the carapace length is ideal. However, since they breathe with lungs, ensure there is always a place on land (dry area) where they can climb up.

Land Area and Basking Spot

Floating dock: The typical type that is fixed to the tank wall with suction cups.

Bricks or rocks: It is also possible to create a dry area by stacking them in a corner of the tank.

Turtle ramp: A ramp-style option is also easy to use for climbing from water to land.

The land area must be large enough for the turtle to completely dry off, and should be warmed with a basking light.

Heating and Lighting Equipment

Water temperature management: 20-28°C (ideally 22-26°C). Maintain with an aquarium heater.

Basking spot temperature: 28-32°C. Create using a spotlight or heat lamp.

UVB light: UVB is necessary for aquatic turtles. UVB radiation synthesizes Vitamin D3, which is important for calcium metabolism. A light with 5% or higher UVB output is recommended.

Photoperiod: Maintain 12-14 hours of lighting per day.

Filter

Since aquatic turtles foul water significantly, a powerful filter is essential.

External filter: High noise reduction and excellent filtration capacity. Aim for a flow rate of 3-5 times the tank volume.

Power filter: Easy to maintain and reasonably priced.

Internal filter: Suitable for small tanks but has limited filtration capacity.

Perform partial water changes (30-50%) 1-2 times per week and regular filter cleaning.

Substrate

Bare bottom (no substrate): Easiest to clean and maintain hygienically. Perfect for beginners.

Fine gravel or sand: Fine gravel resembles the natural environment since musk turtles have the habit of walking along the bottom.

Caution: Avoid sand that is too fine or small pebbles due to the risk of accidental ingestion; use particles larger than the carapace length.

Feeding

Types of Food

Musk turtles are omnivorous and in the wild eat small aquatic invertebrates, insects, fish, and algae.

Artificial food (turtle pellets): Nutritionally balanced and can be used as a primary food. Available in sinking and floating types.

Frozen bloodworms: Highly palatable and effective as a recovery food if the turtle refuses to eat.

Dried shrimp or dried river shrimp: Can be given as treats but overfeeding causes nutritional imbalance.

Live food (killifish, crickets, earthworms): Stimulates hunting instincts and helps increase appetite.

Vegetables (supplementary): Small amounts of lettuce and Chinese cabbage can be given, but since they are primarily carnivorous, vegetables should not be a main food.

Feeding Frequency and Quantity

Juveniles to young turtles (carapace length under 5 cm): Once daily to every 2 days, an amount they can finish within 5-10 minutes

Adults (carapace length 5 cm or more): 2-3 times per week, an amount they can finish within 5-10 minutes

Calcium supplementation: Dust food with calcium powder 1-2 times per week (supplementary even when UVB lighting is present).

Feeding Location

Since feeding in the tank easily dirties the water, it is easier to manage hygiene by feeding in a separate container (small bucket or tub). Return the turtle to the tank after feeding.

Dealing with Odor

When threatened, musk turtles secrete a strong musky odor from their musk glands.

Situations where odor is released: During handling, water changes, when startled, etc.

Handling precautions: Move slowly and accustom the turtle to not feel threatened. Accustomed individuals are less likely to release odor.

Tank odor management: Suppress water odor through proper filtration and regular water changes. Using activated carbon is also effective.

About Hibernation

While wild musk turtles hibernate in winter, it is recommended not to induce hibernation in captivity through indoor housing and temperature control.

Reason: Hibernation failure (incomplete hibernation) can be fatal. It is especially dangerous for individuals not in peak health or for juveniles.

If hibernation is attempted: It is strongly recommended to do so under the guidance of experienced breeders or experts. Gradually lower water temperature and maintain it at around 6-12°C.

Health Management

Common Diseases

Shell softening and metabolic bone disease (MBD): Caused by calcium and UVB deficiency. The shell becomes soft. Prevent and improve with calcium supplementation and UVB lighting.

Respiratory infection: Caused by lowered water temperature and unsanitary conditions. Symptoms include nasal discharge, mouth breathing, and loss of appetite. Antibiotic treatment by a veterinarian is necessary.

Eye inflammation and cloudiness: Caused by poor water quality and vitamin A deficiency. Address with water changes and dietary improvements. Consult a veterinarian in severe cases.

Skin redness and sores (infections): Often caused by poor water quality. Perform water changes and disinfection (under veterinary guidance).

Improper shell shedding and algae attachment: Polish gently with a brush and improve water quality.

Daily Health Checks

• Eyes are clear (no cloudiness or swelling)
• Good appetite
• No wounds or swelling on limbs and tail
• Shell condition (no softening, deformation, or injuries)
• Normal feces (no diarrhea or bloody stool)
• Behavior in water (not floating excessively, not remaining sunken and immobile)

Multiple Turtle Care and Compatibility

Musk turtles generally prefer solitary living, but multiple turtles can be kept with adequate space.

Caution: Territorial disputes and aggressive behavior during mating can occur between adult males. When keeping in pairs or groups, compositions with more females tend to be more stable.

Tank mates: Housing with other turtle species of similar size is sometimes possible, but caution is needed due to differences in water temperature requirements and temperament among species.

Musk turtles are popular as long-term pets because they are small, require minimal space, and are hardy with long lifespans (20+ years). Through BreederDirect, you can connect directly with breeders handling musk turtles and other small aquatic turtles, and can consult in advance about health status, bloodline, and individual personality traits.