I have 2 Convicts in a tank with a Blue Gourami, I also have three snails, no idea what they are. One has a blue shell another has a yellow shell with greenish lines on it and the other is mostly brown. What size of a tank should I use for the three fish and three snails. Right now they are in a 10 but I am not positive if I should get a 20L or something a little bit larger. Any help would be appreciated.
. 2 Convicts need at least 30G, and even then a breeding pair can still make a hell of a lot of trouble. As mentioned above, go for the largest you can fit. Because down the track your are most likely going to want to add more fish.