Mostly south american annuals: Simp, Campellolebias, Cynopoecilus,
Austrolebias, Leptolebias.
Tank space is usually a 2.5G for 1-2 pairs with weekly 50% water
change and peat replacement. I keep my water on the soft acidic
side, and add a small amount of electrolytes.
Food is live blackworms most of the time, and baby/adult brine maybe
twice a month. For fry, food is always baby brine.
Fish won't seem to do their thing until temperatures get to 76F.
Even Campellolebias brucei did not lay an egg at 72F (I know, I know
. . .but I invested lots of time looking for those eggs), but I was
able to find about 30-40 in a pair's weekly peat at 76-78F.
I have not had non-annual cool water fish, but my guess is they'll
do just great at 78F :)
take care,
wm_crash, the friendly hooligan
AKA #08840, SAA #162, HOOLIGAN #1
San Jose, CA
It sounds like we need a little more information, ie, which fish
have you tried? tank space? foods, just how cold are you working
with, etc., etc.