I never planned on keeping fish, one of my friends was moving and had no place for his 55, I told him I could keep it for a week or two. Well its been almost two years. For awhile it was just the 17.5" pleco by himself in a nasty green tank. I stumbled upon this site and couldn't believe what some people on here have. I went to the LFS and picked up a oscar and two texas cichlids. I had them for quite awhile and they got too mean so off to craigslist they went. Now the 55 has a male Jag 5.5", and venn pike at 7.5", fossil cat (really cool at night) 8", bristlenose pleco and the monster pleco. The 90 has a 7" silver arowana, and two senegal bichirs. I am planning on either building or buying a 240-300 this fall.
Just for fun I'll post prices I paid for them up here
Silver aro at 7" 100.00
sen. bichirs at 2.5" 8.99
Jag 2.5" 13.99
Pike 3" 9.99
bristlenose 1.5" 6.99
fossil cat 8" 9.99