On Sat, 29 Dec 2007 21:04:10 -0600, Mike Hartigan wrote:

I recently noticed a
couple hundred or so white eggs, each about the size of the head of a
pin, attached to the glass, primarily, though not exclusively, in the
upper corners of the tank. Any idea which of these critters might be
responsible?

Most likely the albino catfish. Mine like to lay eggs on the glass.

Are they waiting to be fertilized or can I expect to
soon be overrun with one of the above mentioned fish? Is there
anything I should do to ensure their safety and/or viability?

They are fertilized but if the snails or the pleco don't eat the eggs, the
other fish will eat the young. And that includes their parents.

It's very difficult to move the eggs. Best chance for survival, if snails
are not a problem, is to move out the other fish till the eggs hatch - a
few days. Then siphon the fry out into another tank and return the other
fish to the tank.

Feed the fry several times a day - at least 5 to begin with, 4 after the
1st month, 3 after the 2nd or 3rd depending how well they grow, and only
go to twice a day when they hit at least an inch in length.

I feed fry Hikari First Bites, frozen baby brine shrimp, and vinegar eels.