Some of the Plecostomus species get very large. If you have one of them then you will need a correspondingly large tank. I would say a minimum of a 30 gallon tank should be OK for the medium sized ones.
Only if the Pleco is big enough
I have a pleco and a Glofish together.
Petco Or Petsmart if your looking for a standard pleco or a store that specializes in tropical fish if your looking for a fancy pleco.
Yes. But between you and me, if you have the otos, you don't need the pleco.
about 10,000 gallons ;)
Need to know gallons of what.
About 30 Gallons
3 gallons
1200 ÷ 25 = 48 gallons
You need 0.6 fl oz for 1,700 gallons.
450 U.S. gallons
Pleco's are tropical fish, so if your pond has a sub-tropical temperature, the pleco will not survive in the pond for very long.