I have had two red ear slider aquatic turtles. Both of these turtles have been picky eaters, as turtles go. I tried a few different types of food from PetSmart in an effort to find the perfect one. After trying other floating pellets, I bought a reasonably priced but large bottle of Tetra Reptomin Floating Food Sticks. The sticks were somewhat long, but I solved that by breaking them in half. My larger turtle had no problem with the original size sticks, and ate them quickly. My smaller turtle also enjoyed the smaller sticks.

These floated just until they were soggy. My turtles loved chasing these...