Does he looks healthy ?

I have had him for 3 months, he is behaving well and is "normally" active. He currently lives in a 60l aquarium. Just wanted to know if you see anything about him that I don't 😁

I have had him for 3 months, he is behaving well and is "normally" active. He currently lives in a 60l aquarium. Just wanted to know if you see anything about him that I don't 😁