Took a few photos of Rex a few days ago.
Here he is, a great looking male red eared slider, swimming and begging for food ….
His claws are getting to a nice length. You can also see how massive his tail is becoming. Those are the two sure-fire ways to sex a Red ear slider turtle. Female RES have short claws and their tails stay small. Of course, the difference in the tail and claws manifest themselves after the RES reaches 4" in length (just the shell from head to tail in a straight line). Before they get to 4" it is very hard to sex RES turtles.
I just love that last picture.