It's a 55 gallon fully planted tank. He's probably about a year and a half to two years old. He's in the tank with 4 angels, 4 khuli loaches, 1 bushynose pleco, 3 Cory cats, and 2 bumble bee gobys. I do a water change every 2 weeks or every week and a half and the light is on for about 6-7 hours...