Fish
in the
News.
A recent fish story
"A new
form of
lionfish
has been
evolving
in the
Red Sea
during
the past
four
decades,
says new
research.
According
to a
study
undertaken
by Lev Fishelson
of Tel
Aviv
University
which
was
published
today in
the
journal
Environmental
Biology
of
Fishes,
the
lionfish,
Pterois
volitans,
found in
the Red
Sea has
changed
in
appearance
over the
past 40
years
and a
new form
has
evolved."
Here's a picture of a Lionfish, Pterois volitans. This species seems to be rapidly evolving a new form or possibly even a new subspecies with different feather-like tentacles above their eyes with a sharply defined black eye spots with a white rings around them, as shown in the picture, above, by Professor Lev Fishelson.
More
Fish in
the
News.
Female
guppies,
a
popular
aquarium
fish,
may risk
their
lives to
avoid
too much
attention
from
males.
Observing
wild
population
of
guppies
in the
rainforest
of
Trinidad,
researchers
found
that
female
guppies
swim in
habitats
that
contain
few
males -
but many
predators.
Click
here
to read
the rest
of this
story.
What
is a
Species?
Wikipedia,
a free
online
encyclopedia,
says,
the most
commonly
cited
definition
of
"species"
was
first
coined
by Ernst
Mayr. By
this
definition,
called
the
biological
species
concept
or
isolation
species
concept,
species
are
"groups
of
actually
or
potentially
interbreeding
natural
populations
which
are
reproductively
isolated
from
other
such
groups".
However,
many
other
species
concepts
are also
used.
Click
here
for more
about
Ernst
Mayr.
Thank you. A big sincere thank-you to Dennis
from Spokane, Washington, to
Mike from Missouri, to Carl from Albuquerque, NM, and to
Zack from Kentucky for calling
during the show. Tom and Nevin
encourage YOU to call Pet Fish Talk during the show and talk about your pet fish.
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