Well at age 12 had a 30g with goldfish for about a year. Age 16 had a 60g with a pair of Oscars for a year. Neighbor got me into 100 G tank filled w/ Mbuna at age 27? Had a few tangs in between For about 10 years. Think I got into Tropheus at age 35- 40? Now giving Petros a shot at 50.