Ancient animals. Modern nutrition.
A red-eared slider needs an age-appropriate mix of commercial aquatic-turtle food, leafy greens and suitable animal foods. A floating pellet can be convenient if your slider takes food at the surface. Add leafy greens and occasional insects. Young sliders need more protein; adults need more greens.
What a slider actually needs from its food
- Protein, especially when young. Juvenile sliders are mainly carnivorous, with animal foods making up to about two-thirds of their diet (VCA). In a controlled study, young sliders fed 25% and 40% protein grew significantly more than those fed 10% (Avery et al., 1993).
- Animal and plant foods. Sliders become more omnivorous with age. Adults do well on about half animal and half plant foods (VCA).
- Calcium for the shell. Veterinary guidance warns against foods with a poor calcium-to-phosphorus balance (VCA).
- Food that works in water. Sliders eat with their heads underwater (VCA), so the food needs to hold together in the tank.
How to pick a slider food in the store
| Look for | Why it matters for sliders |
|---|---|
| Named animal proteins first (fish, shrimp, krill, insects) | Ingredients are listed by weight (FDA), so the first few tell you what the food is mostly made of |
| Protein you can see on the label | Commercial turtle foods run about 30–50% protein and vary widely (Merck) |
| Both calcium and phosphorus listed | Lets you check that calcium is higher |
| Some plant ingredients | Omnivores benefit from plant matter (Merck) |
| A pellet size your slider can swallow | Easy eating means less waste in the water |
How Archelon matches what sliders need
Archelon was formulated with turtle-breeder input for aquatic and semi-aquatic turtles. Its label provides these details to compare with your current food:
- 45% crude protein (min), from White Fish Meal (Pacific whiting), Blood Meal, Fish Protein Concentrate, Shrimp Meal, Krill Meal and black soldier fly larvae.
- Whole-prey style ingredients. Fish, shrimp, krill and insects are the kinds of animals wild aquatic turtles eat whole.
- Plant ingredients: dehydrated kelp, spirulina and dandelion powder. Dandelion greens are one of the greens VCA recommends for aquatic turtles.
- 3:1 calcium to phosphorus (the stated label ratio).
- 3.0 mm floating pellet, so you can see what's eaten and scoop out leftovers.
- No corn, no soy, no artificial colors, no ethoxyquin.
See every ingredient on the full label.
A simple slider feeding routine
| Juvenile slider | Adult slider | |
|---|---|---|
| Pellets | Daily: what it eats in 5–10 minutes | Every 2–3 days, or smaller daily portions |
| Leafy greens | Offer daily | Most days; a bigger share of the diet |
| Insects, worms, snails | Occasional extras | Occasional extras |
Archelon's package directions say to feed 1–2 times daily, offer only what your turtle eats in 5–10 minutes, adjust for size and remove leftovers. VCA notes adults may need a good-sized meal only every two to three days (VCA). Adjust to your slider's age and body condition.
Foods to skip
Bread, hot dogs and lunch meat, raw grocery-store meat, iceberg lettuce and mostly-fish diets (VCA). Turtles will eat almost anything. That doesn't make it good for them.
Build a routine you can actually follow
Choose who feeds the turtle, where the food is stored and how the portion will be measured. Keep the food directions beside the container. A second person should be able to follow the routine without guessing what “a little” means.
Record pellets and extras together. If you change the pellet, compare the old and new directions before using the same scoop. For the greens portion, use the named-vegetable list; for hatchlings, check pellet size and daily feeding.
What a food label cannot tell you about shell care
A printed calcium-to-phosphorus ratio describes the food, not the complete care of the turtle. Do not use it as a substitute for checking the enclosure or as a reason to add supplements without advice. Species-appropriate heating, UVB access and diet need to be considered together (MedVet's care overview).
Questions slider owners ask
Is 45% protein too much for an adult slider?
The protein percentage alone cannot settle that question. Consider the whole diet, portion, age and body condition with a reptile veterinarian. A published range for commercial foods describes what is available; it does not establish the ideal formula for an individual slider. Commercial turtle foods generally range from 30–50% protein (Merck).
Can I feed only pellets?
A quality pellet should be the base, but veterinary guidance recommends rotating in greens and occasional animal foods (VCA).
How do I switch my slider to a new food?
Mix the new food in gradually alongside the old one, keep mealtimes the same, and hold back treats while your slider adjusts. Our step-by-step guide covers it: How to switch your turtle to a new food.
Sources: VCA Animal Hospitals, "Feeding Aquatic Turtles" (2024); Merck Veterinary Manual, "Nutrition in Turtles" (2025); Avery et al. (1993), Physiological Zoology; FDA, "Information on Marketing a Pet Food Product"; Archelon package label.
Written by Archelon Editorial. How we research these guides. General feeding information; individual needs vary by species, age and health.