Augusto F. Menezes
Aside from a preference for warmer waters, the needs of blue white clouds Tanichthys
micagemmae are largely the same as those of the white cloud mountain minnow T. albonubes.
terms of pH, hardness, and temperature. Some
would argue that changing so much at once
is stressful to fish, but that has never been
my experience. In fact, most of the fish I’ve
kept, both freshwater and saltwater, have
reacted very positively to major water changes.
Dividing a water change into more frequent
but smaller changes does not maintain water
quality as well as doing the one large water
change. Besides, depending on how hectic
your schedule is, a thrice-weekly water-change
regimen might prove to be burdensome for you.
So, your best bet is to test your water and
make incremental changes in the volume or
frequency of your water changes until you
find the rate that works best for you (as
reflected in your nitrate readings).
Blue White Clouds
At my local fish store, I came
across a tank with several blue
white clouds. Are they just a
color variation of the regular white cloud
mountain minnow, or are they a separate
species? Also, will they do just as well as
regular white clouds in an unheated tank?
The blue white clouds at your
local fish store are probably
Tanichthys micagemmae, a
distinct species from the white
cloud mountain minnow T. albonubes. While
just as hardy, adaptable, peaceful, easy to
feed, and easy to spawn as its congener,
T. micagemmae differs from T. albonubes
in one significant area: Being a tropical QA
species from Vietnam, it does not share
T. albonubes’ tolerance of cooler water
temperatures. Hence, you’ll need to use a
heater in your aquarium if you intend to keep
this species. T. micagemmae also reaches
a slightly smaller maximum size than T.
albonubes does—about 1 inch versus 1½
inches total length.
Tropical Fish Hobbyist w