I was into marines for about 15 years, and also went through the Big Predator and Monster Cichlid phase for probably 25 years. I have always been fascinated with keeping native fish and usually had at least a couple tanks devoted to them, and will probably keep them again but don't have any at the moment. A brief couple of years with African cichlids came and went, and I have owned and enjoyed arowanas, polys, Osphronemus gouramis, an electric eel (only fish that scared the crap out of me...), gars, big predatory catfish (Clarias, RTC, TSN, electric cat, etc.) and a bunch of others, with some of the individual fish staying in my care for 10 or more years. I was also into reptiles, particularly snakes, for decades.
Oddly enough, I have virtually no goldfish experience (a single smallish tank with 3 department-store cheapies, roughly 50 years ago!), and I don't recall ever keeping a Betta.
Nowadays, I mostly just enjoy smaller fish, low-tech planted tanks and puttering around my small outdoor ponds. I'm playing with some less-common livebearers (Heterandria and a couple of Goodeids) and thinking of getting one snake again, largely to make sure my granddaughters come to appreciate rather than fear them. I'm also currently toying with the idea of building
just one more tank of roughly 200-250 gallons and keeping
just one big fish in it for old times' sake...leaning heavily towards either an electric cat or a jelly cat. Still up in the air about this, because I don't want to fall into the trap of having too many tanks to maintain so that it becomes an onerous chore rather than a labour of love. We'll see...
I completely agree with
Milingu
above: nothing wrong with asking what others are "into", but you must decide for yourself what you like and want to keep. Don't be like Homer Simpson: "Oh, I don't know what I think until TV tells me!"
