Please note that the shrimp require water changes and food. I have found that they like shrimp pellets that are designed for corydoras. He he? Sorry. I found a shred of humor in that. So what did you do with all the rest of the Apisto pairs?
One thing to keep in mind is that auctions can be a wonderous and dangerous place due to overzealousness on the bidders behalf. On the fly, when one buys cichlid pairs or individuals, you can split tanks with the new fish with other new fish (of the same water parameters) until you get set up. It is best to always keep in mind that you do not want to put newly acquired fish into established tanks.
NO matter who they came from because even if you are convinced that the person you bought them from is a good fish keeper,
new fish to your environment are more succeptable to disease because of the tremendous amount of stress of being bagged, handled numerous times, room temperture, the length of time they have been in the bag, whether they were fed that day when they were bagged, fluctuations of temperature; can and will succumb to diseases normally fought off. There are certain pathogens previlent in evey tank,
at all time. Keep in mind your tank space availabilty, how long the new fish have been bagged and how long they can endure the environment until you can release them in an environment that promises good upkeep.
Your other apistos can be kept in bare bottom tanks with tap water. When you are ready to breed them is the time you match the species of apisto with its native environment. Also, some species are more prone to aggressiveness to their conspecifics (of their kind) and other fish similar in body shape.
An emergency tank set up that I use occasionally, is to fill a new tank with half the water of an established tank that has no visible evidence of disease, take a sponge filter from that tank and insert another sponge filter to replace the one you removed, fill the new tank with new water that has been dechlorinated, add a heater set to 80 degrees, cover the tank....cross your fingers.....No really...never cycle again!
If you are really, really, really, interested in Apistogramma go to
http://apistogramma.com,(A previous CCA speaker, Ted Judy owns the site now) get a copy of the cichlid Atlas 1 (impossible, but I'll loan you mine), or 2 by Uwe Romer, the Complete book of Dwarf Cichlids by Hans-Joachim Richter, American Cichlids 1 by Horst Linke and Dr. Wolfgang Staek,
http://www.pvas.com>articles. Of course, ask questions here and we'll do the best we can to help.
Francine
PS. I'll only loan you my books if you promise not to eat while you read and that you will return in a month in the condition I gave you it you.
We may have to start a library folks!