Nice tigers! Where did you find them? We had a few of them growing up, we found the 1st one in the skimmer box of our pond. We kept her and named her Sally, go figure! We had another, Alex that we found a year later. They lived together until Alex died. I have since moved away from home, my mother still feeds Sally regularly. She lives in a 20L, looks a lot like a turtle enclosure. He has to be at least 7 years old now, given we found her 7 summers ago. She eats mealworms, we were told to pinch the heads before we fed them to her, otherwise they (the worms) could munch through the stomach of the salamanders.
Good luck!