I thought catfish are type of loaches? or may be I'm only thinking
dojo (japanese catfish), which I remember reading it's a cousin to
loaches... dojo is covered in slime... I guess that is the key to
identifying scaleless fish?

didn't know corys and plecos are sensitive.. plecos look so robust..
corys.. well, didn't think they were the sensitive kind of the sort :-P

so.. does that mean my botias (zebra loach, sidthemunkis) are ok with
the meds (antibiotics and anti-parasitics) as "normal" fish? (unless
the package says "do not medicate bottom feeders, loaches" on it)

I hear lots about malachite green being toxic to scaleless/sensitive
fish and plants?, but what about methylene blue?

CA has issues with many things. as far as I know, it's the only state
that puts a warning label on crystal dinnerware (wine glasses, etc)
since crystal glass has lead in it... (I have a real hard time
believing lead that is in a matrix of glass is going to leech all that
much to be that toxic! chemically speaking glass is one of most stable
substance...)

anyhow...

linda