Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
From San Jose, look into Neptune's, in Millpitas, if I remember correctly.
WCM are schooling, highly active fish. I would not put them into such a small tank.
Killies would be nice, are you interested in the annual Killies, or something similar? Clown Killies are small enough to work in that tank. They are surface fish. I am not sure how social they are, the only time I saw them was a dozen or more in a tank.
How about a pair of dwarf Cichlids, Apistos, Rams or similar? These are not cool water fish, though.
Pseudomugil of some sort sounds good. I have seen these in several stores, including Albany Aquarium (in Albany, of course).
If you keep male only Endlers, you would not have to catch and remove the fry. If you keep a mixed colony, you will have plenty of fish to take to the store and sell or at least get store credit. Endlers are OK in room temperature tanks. Low 70s works well for them, if you can set a heater on low.
Do you have the hard water that most of San Jose seems to have? Or are you willing to work with RO or distilled?