Red-Eared Slider Care Guide: Tank, Diet & Health [2026]

Species Overview

The red-eared slider (Trachemys scripta elegans) is one of the most popular pet turtles worldwide. Named for the distinctive red or orange patch behind each eye, these semi-aquatic turtles are native to the south-central United States and northern Mexico.

Red-eared sliders are hardy, active, and can become quite personable once they recognize their keeper. However, they require more space, equipment, and long-term commitment than many new owners expect.

Quick Facts

Temperament and Behavior

Red-eared sliders are diurnal (active during the day) and are strong swimmers. They spend much of their day alternating between swimming, foraging, and basking. While not typically aggressive, they can nip during feeding or when startled.

With consistent, gentle handling, many sliders learn to approach their owners and may even eat from your hand. Avoid grabbing from above, which mimics a predator and causes stress.

Daily Care Routine

A consistent daily routine keeps your red-eared slider healthy:

• Morning — Check water temperature (75-85 F) and basking light operation
• Feeding — Feed juveniles daily; adults every other day
• Observation — Watch for signs of illness (lethargy, swollen eyes, soft shell)
• Evening — Ensure lights turn off on schedule (12-hour light cycle)

Weekly Maintenance

• Test water parameters (ammonia, nitrite, pH)
• Perform 25-30% water change
• Clean basking dock and tank walls
• Inspect filter media

Tank Requirements at a Glance

Red-eared sliders need spacious enclosures. The general rule is 10 gallons of water per inch of shell length. An adult female may need a 120-gallon tank or larger.

Key equipment includes:

• Canister filter rated for 2-3x tank volume
• Basking dock with heat lamp (85-95 F surface)
• UVB bulb (10.0 output, replaced every 6 months)
• Submersible heater to maintain water temperature
• Thermometer for both water and basking area

For a detailed setup guide, see our Red-Eared Slider Tank Setup article.

Diet Overview

Red-eared sliders are omnivores, with juveniles leaning more carnivorous and adults eating more plant matter.

• Commercial turtle pellets — Staple diet (ReptoMin, Mazuri)
• Protein — Earthworms, feeder fish, dried shrimp
• Vegetables — Romaine lettuce, dandelion greens, aquatic plants
• Calcium supplement — Cuttlebone or calcium powder

See our full Red-Eared Slider Diet Guide for feeding schedules and food lists.

Health and Veterinary Care

Find a reptile-experienced veterinarian before you need one. Schedule an annual wellness exam that includes a fecal test for parasites.

Common Health Issues

• Shell rot — Bacterial or fungal infection on the shell
• Respiratory infection — Wheezing, bubbles from nose, lethargy
• Vitamin A deficiency — Swollen eyelids, loss of appetite
• Metabolic bone disease — Soft or deformed shell from lack of UVB/calcium

Learn more about health concerns in our Red-Eared Slider Lifespan Guide.

Legality and Invasive Species Concerns

Red-eared sliders are listed among the world's 100 worst invasive species. Released pets have established populations on every continent except Antarctica.

Before acquiring a red-eared slider:

• Check your state, province, or country's regulations
• In the US, federal law prohibits the sale of turtles with shells under 4 inches
• Some regions (e.g., parts of the EU, Australia) ban ownership entirely
• Never release a pet turtle into the wild

Is a Red-Eared Slider Right for You?

Consider these factors honestly:

• Space — Can you house a 100+ gallon tank long-term?
• Budget — Initial setup costs $300-500; ongoing costs include electricity, food, and vet visits
• Commitment — These turtles can live 30+ years
• Allergies/Salmonella — All reptiles can carry Salmonella; proper hand hygiene is essential

If you can meet these needs, a red-eared slider can be a fascinating, rewarding pet for decades.