Strange Fish Species Might Be Able to Taste Using Its Crab-Like Legs, Study Claims
DA Gadgets 
The
northern
sea
robin
(Prionotus
carolinus)
is
an
intriguing
marine
species
known
for
its
remarkable
adaptations.
Unlike
most
fish,
this
species
employs
its
six
leg-like
appendages
to
navigate
the
ocean
floor.
This
ability
allows
it
not
only
to
move
but
also
to
explore
the
sea
bed
in
search
of
food.
While
this
capability
was
long
known
in
the
scientific
community,
another
strange
use
case
of
its
leg
was
recently
discovered.
Sensory
Capabilities
of
Sea
Robins
Recent
studies
have
illuminated
how
these
legs
function
as
sensory
organs.
Researchers
observed
that
the
northern
sea
robin
is
capable
of
detecting
buried
prey
through
chemical
cues
released
into
the
water.
Using
its
shovel-like
feet,
the
fish
can
unearth
hidden
food
sources,
demonstrating
a
unique
blend
of
mobility
and
sensory
detection.
Research
Collaboration
and
Findings
A
collaborative
research
effort
involving
developmental
biologist
David
Kingsley
from
Stanford
University
and
molecular
biologist
Nicholas
Bellono
from
Harvard
University
examined
the
sea
robin’s
sensory
adaptations.
The
study
was
published
in
the
journal
Current
Biology.
Their
experiments
placed
the
fish
in
environments
with
buried
mussels
and
amino-acid
capsules.
The
results
confirmed
the
fish’s
efficiency
in
locating
and
retrieving
these
hidden
items,
thanks
to
the
specialized
bumps
on
its
legs,
known
as
papillae,
which
house
taste
receptors.
Evolutionary
Insights
into
Adaptation
The
evolutionary
background
of
the
northern
sea
robin
reveals
an
intriguing
narrative.
An
evolutionary
analysis
of
various
sea
robin
species
indicated
that
while
the
legs
initially
developed
for
locomotion,
their
sensory
capabilities
evolved
later.
The
researchers
identified
the
tbx3a
gene
as
a
key
factor
in
the
development
of
these
legs,
and
using
CRISPR
technology,
they
demonstrated
that
altering
this
gene
can
impact
both
leg
formation
and
sensory
function.
Conclusion:
Implications
of
the
Research
The
findings
from
this
research
not
only
enhance
our
understanding
of
the
northern
sea
robin
but
also
provide
broader
insights
into
how
species
adapt
over
time.
By
exploring
the
genetic
and
evolutionary
pathways
that
led
to
such
unique
adaptations,
scientists
can
better
understand
the
complexities
of
marine
life
and
the
evolutionary
processes
that
shape
it.
