I have absolutely no experience with a calling Leuc, so take this for what you will, but...
If they're anything like Terribilis, they will get louder as they get older. The first time I heard my male was when he was 10 months old. The electric was out, no one was home, and it was extremely quiet in the house. I was on the floor about two to three feet from the tank working on something frog-related when suddenly, I thought I could the hear crickets outside. But something didn't seem quite right. I stopped what I was doing, looked around, and thought..."No way!" Sure enough, it was coming from the little guys tank! You would not believe how extremely happy that made me!
That was over four months ago...now, I can sometimes hear him in the next room with the TV on. It still makes me smile the few times every day that I hear him and I have to stop what I'm doing for a second and just look and listen. Greatest sound in the world!
If they're anything like Terribilis, they will get louder as they get older. The first time I heard my male was when he was 10 months old. The electric was out, no one was home, and it was extremely quiet in the house. I was on the floor about two to three feet from the tank working on something frog-related when suddenly, I thought I could the hear crickets outside. But something didn't seem quite right. I stopped what I was doing, looked around, and thought..."No way!" Sure enough, it was coming from the little guys tank! You would not believe how extremely happy that made me!
That was over four months ago...now, I can sometimes hear him in the next room with the TV on. It still makes me smile the few times every day that I hear him and I have to stop what I'm doing for a second and just look and listen. Greatest sound in the world!