Can anyone give me some info on freshwater flounders, like are they particular to any water parameters or temperatures? My local fish guy said bloodworms, frozen brine shrimp and other live/frozen food. Would they be fine with a pair of rams and maybe some tetra's in a 20 gallon (until I get something bigger for it). I'm going with a sand bottom with a few plastic plants. Two bucks for a 1-2" flounder. I'm only getting one to try things out, but it won't be for a few days, I need to get the sand in it. This will be my first time with sand so some tips on sand would help too.