Eastern Mud Turtle — Care Sheet & Morphs

Q: How big does an adult Eastern Mud Turtle get?

An adult Eastern Mud Turtle typically measures 8–12 cm.

Husbandry requirements

Eastern Mud Turtle — origin: Southeastern United States (from the northeastern coastal plains down to Florida, and westward to Texas and the Mississippi Valley). Shallow wetlands, marshes, ponds and slow-moving ditches. Not listed under CITES, but keeping/collection regulations vary from state to state and country to country: favour captive-bred individuals..

Terrarium temperature gradient

Night min18 °C

Cool side22–24 °C

Warm side25–27 °C

Basking spot30–32 °C

Water temperature maintained at 22-26°C (guarded heater if needed). A dry hot spot (basking lamp) at 30-32°C above the platform is essential for basking and thermoregulation. A seasonal drop (mild overwintering around 10-15°C) can stimulate breeding in healthy, well-fed animals.

Enclosure (adult)

90 × 45 × 40 cm

Aquaterrarium / semi-aquatic tank with a land area and a basking platform

Recommended water volume of about 80 to 115 L per adult. Provide a secure lid or rim (a good climber, escape is possible), an easy-access beach/platform out of the water and hiding spots. A bottom-walker rather than a swimmer.

Humidity

60–90 %

A semi-aquatic species: air humidity is not a critical parameter. The key factor is water quality and temperature, not ambient humidity.

Substrate

Fine sandBare bottom, easy to cleanPotting soil/peat on the terrestrial nesting area

Avoid medium-sized gravel (risk of digestive impaction from ingestion). A fine sand bottom allows natural digging behaviour; the female needs a loose land area to lay her eggs.

UVB

Recommended

Yes. A UVB 5.0 tube or lamp (5-6%) above the basking area, replaced every 6 to 12 months. Essential for vitamin D3 synthesis, calcium absorption and shell health.

Water source

Always available

The heart of its habitat: dechlorinated and filtered water (filter matched to the volume), with regular water changes for impeccable quality. Moderate depth (about 1 to 2 times the width of the carapace) as it is a poor swimmer that walks along the bottom; provide shallow zones and easy exits/platforms to prevent drowning.

Origin

Kinosternidae

Southeastern United States (from the northeastern coastal plains down to Florida, and westward to Texas and the Mississippi Valley). Shallow wetlands, marshes, ponds and slow-moving ditches. Not listed under CITES, but keeping/collection regulations vary from state to state and country to country: favour captive-bred individuals.

Feeding & health

Diet

Omnivore with a carnivorous tendency — Insects, worms, snails and molluscs, crustaceans, small fish, amphibians, carrion; some plant matter/aquatic plants. Can be supplemented with quality aquatic-turtle pellets.

Forages on land more often than musk turtles. A varied diet; juveniles fed more frequently, adults 2-3 times/week. Provide calcium (cuttlebone) and do not overfeed to avoid obesity.

Breeding

Oviparous

Clutch 2–6 eggs/young. Hard-shelled eggs, laid on land; sometimes several clutches per year. Incubation of about 70 to 100 days at 26-30°C. Sex can be influenced by incubation temperature. Provide a loose, moist nesting substrate.

Health watch points

Shell rot (bacterial/fungal ulceration) linked to poor water quality
Osteodystrophy / soft shell from a lack of UVB, calcium or vitamin D3
Respiratory infections (water too cold, drafts, insufficient heating)
Hypovitaminosis A (swollen eyes, eyelid oedema, discharge)
Internal parasites and stress in wild specimens; egg retention (dystocia) in females

Morphs & genetics

Registry of 2 documented genes for Eastern Mud Turtle.

Hypomelanistic / Pastel light phaseDom
Albino (T-)Rec

Pairing calculator

Pick each parent's genotype — clutch probabilities update live. Free, no sign-up.

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Eastern Mud Turtle × Eastern Mud Turtle

Probabilities per gene (independent loci).

Expected clutchSelect at least one gene on a parent.

Frequently asked questions

Answers to the most common questions about keeping the eastern mud turtle.

How big does an adult Eastern Mud Turtle get?▾

An adult Eastern Mud Turtle typically measures 8–12 cm (adult carapace (shell) length; maximum around 15 cm. smooth, domed carapace with no keel in adults. females often slightly larger.).

What temperature and humidity does a Eastern Mud Turtle need?▾

A gradient of roughly 22–24 °C on the cool side to 25–27 °C on the warm side, with a basking spot of 30–32 °C. Humidity 60–90 %.

What does a Eastern Mud Turtle eat?▾

Omnivore with a carnivorous tendency: Insects, worms, snails and molluscs, crustaceans, small fish, amphibians, carrion; some plant matter/aquatic plants. Can be supplemented with quality aquatic-turtle pellets..

Is the Eastern Mud Turtle a good reptile for beginners?▾

Beginner + level. Generally docile but can turn grumpy and bite when handled; handle sparingly. Hardy and adaptable, less prone to drying out than Sternotherus. Non-venomous. Wild-caught specimens are more fragile (stress, parasites): prefer captive-bred animals. Plan ahead: a lifespan of 30–50 yrs.

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