Originally Posted by M.I.C.
I have had my 10 gallon tank (small but I live in an apt and cant have bigger) set up for amout 1-1/2 months I have 2 silver dollars and am wondering what kind and how many fish I should add next. I wanted to add something colorful, I was hoping maybe a smaller cichlid or 2 of some sort. Any feedback would be appreciated.
What Flashygrrl said about the Silver Dollars. They get about 8" long an will max out the bioload capacity on a 10 gallon in nothing flat.
She's not 100% right about cichlids, though. I can think of maybe two or 3 species that will work as a pair in a 10 gallon as the only fish in there. There are a couple of species of Lake Tanganyika Dwarf Shelldwellers that should work - Lamprologus stappersi, Lamprologus multifasciatus, Neolamprologus brevis, Lamprologus ocellatus (but only a bonded pair. Two fish not bonded will kill each other in a 10.) Sand substrate, a bunch of shells, coral in the filter. NO OTHER FISH.
Now, then, if you want colorful, any of the small tetras will work - Neons, Green Neons, Cardinals, Glowlights, Black Neons, Flames, embers - half dozen to 10 of each. There are also half a dozen species of microrasbora you could get 15 or 20 of - Rasbora maculata springs to mind.
If it's not too hot in the summer where you are, you could keep Heterandria formosa (least killifish - a livebearer) or Celestial Pearl Danios or Medaka ricefish.
Red Cherry Shrimp
Betta - one male or 6 or 7 females (I am setting up a betta sorority in a 10 gallon now - planning on 6 and 3 ottos)
Ottos - more than 3 and you'll need to culture algae on smooth rocks to feed them.
Dwarf Puffers - 1 male no more than 2 females. Maybe up to 3 ottos. Nothing else.
Kuhli or black kuhil loaches
Lots more out there, but that should get you started.