I just inherited a 37 gal tank from a friend, and have made a slight descision on fish to keep. I think I've decided to have 3 Zebra Loaches, 5-8 Scissortail Rasboras, 1 Betta, and MAYBE a Blue Lobster --> (Procambarus sp.). It might be just a tad overstocked for the 1" of fish per 1 gal of water rule, but if I'm diligent about w/c's and maintenance, I should be okay. Also iffy on the lobster and loaches are both bottom dwellers. Comments or suggestions are gladly welcome.