Precision
fish
farming
is
a
novel
idea
in
the
aquaculture
research
and
development
industry
that
integrates
modern
technology
pre-data
processing
methodologies
inorder
to
allow
data-driven
decisions
precise
farming.
The
objectives
are
use
contactless
technologies
automate
process
of
monitoring
fish,
improve
infrastructure,
marine
environment.
Individualized
treatment,
biomass
measurement,
status
assessment
all
depend
on
ability
identify
specific
same
species
within
group
frame.
Recent
studies
have
demonstrated
body
patterns
used
for
individual
identification,
but
there
currently
no
system
automation
this
process.
We
here
introduced
method
entirely
identification
based
their
characteristics.
Therefore,
we
adopted
Ensemble
MobileNetV3
NASNets,
also
known
as
(Ens_MobV3+NasNet),
excusively
classification
present
Deep
Vision
trawl
camera
images.
Speeded-up
robust
features,
which
realistic
simulations
images,
increase
speed.
Fish4Knowledge
dataset
study,
it
discovered
suggested
Ens_MobV3+NasNet
achieves
98.0%
accuracy,
95%
precision,
94.3%
recall,
91%
F1-score.
Journal of Marine Science and Engineering,
Journal Year:
2025,
Volume and Issue:
13(3), P. 599 - 599
Published: March 18, 2025
Many
studies
have
used
various
time-frequency
feature
extraction
methods
to
convert
ship-radiated
noise
into
three-dimensional
(3D)
data
suitable
for
computer
vision
(CV)
models,
which
shown
good
results
in
public
datasets.
However,
traditional
engineering
(FE)
has
been
enhanced
interface
matching–feature
(IM-FE).
This
approach
requires
considerable
effort
design,
larger
sample
duration,
or
a
higher
upper
limit
of
frequency.
In
this
context,
paper
proposes
one-dimensional
network
design
underwater
acoustic
target
recognition
(UATR-ND1D),
only
combined
with
fast
Fourier
transform
(FFT),
can
effectively
alleviate
the
problem
IM-FE.
method
is
abbreviated
as
FFT-UATR-ND1D.
FFT-UATR-ND1D
was
applied
network,
named
ResNet1D.
Experiments
were
conducted
on
two
mainstream
datasets,
using
ResNet1D
4320
and
360
tests,
respectively.
The
lightweight
model
ResNet1D_S,
0.17
M
parameters
3.4
floating
point
operations
(FLOPs),
achieved
average
accuracies
97.2%
95.20%.
model,
ResNet1D_B,
2.1
5.0
FLOPs,
both
reached
optimal
accuracies,
98.81%
98.42%,
Compared
existing
methods,
those
similar
parameter
sizes
performed
3–5%
worse
than
proposed
paper.
Additionally,
achieving
rates
require
more
1
2
orders
magnitude
FLOPs.
Marine Ecology Progress Series,
Journal Year:
2023,
Volume and Issue:
717, P. 157 - 179
Published: July 19, 2023
Reef
fish
assemblages
across
tropical
and
temperate
latitudes
are
increasingly
threatened
by
human
impacts
climate
change.
Accurate
efficient
survey
methods
essential
for
quantifying
these
communities
to
inform
management
strategies.
Imaging
sonars
(ISs)
high-frequency
acoustic
devices
that
produce
camera-like
images
of
objects.
Unlike
optical
instruments,
IS
functions
effectively
in
turbid
dark
water
has
proven
valuable
detecting
fishes
poor
visibility
at
night.
Abundance,
species
richness,
size
desirable
metrics
most
reef
surveys.
This
review
investigates
previous
attempts
quantify
using
different
habitats.
These
often
quantified
comparison
with
alternative
(e.g.
cameras,
extractive
techniques).
examines
the
causes
agreement
or
incongruence
between
estimates
from
alternatives.
Any
instrument
employed
should
be
able
operate
structurally
complex
habitats,
thus
ability
function
circumstances
is
also
reviewed.
Finally,
5
notable
limitations
described
solutions
discussed.
Overall,
this
underlines
net
value
surveying
but
advises
complement
abundance,
size.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(15), P. e35217 - e35217
Published: July 27, 2024
Underwater
cameras
are
crucial
in
marine
ecology,
but
their
data
management
needs
automatic
species
identification.
This
study
proposes
a
two-stage
deep
learning
approach.
First,
the
Unsharp
Mask
Filter
(UMF)
preprocesses
images.
Then,
an
enhanced
region-based
fully
convolutional
network
(R-FCN)
detects
fish
using
two-order
integrals
for
position-sensitive
score
maps
and
precise
region
of
interest
(PS-Pr-RoI)
pooling
accuracy.
The
second
stage
integrates
ShuffleNetV2
with
Squeeze
Excitation
(SE)
module,
forming
Improved
model,
enhancing
classification
focus.
Hyperparameters
optimized
Enhanced
Northern
Goshawk
Optimization
Algorithm
(ENGO).
improved
R-FCN
model
achieves
99.94
%
accuracy,
99.58
precision
recall,
99.27
F-measure
on
Fish4knowledge
dataset.
Similarly,
ENGO-based
evaluated
same
dataset,
shows
99.93
99.19
precision,
98.29
98.71
F-measure,
highlighting
its
superior
ICES Journal of Marine Science,
Journal Year:
2023,
Volume and Issue:
81(2), P. 207 - 251
Published: Nov. 30, 2023
Abstract
For
many
aquatic
animals,
distributional
patterns,
trophodynamic
relationships,
and
reproductive
activity
are
driven
by
complex
biotic
abiotic
ecosystem
interactions
that
influence
behaviour.
Linking
behavioural
information
to
environmental
stimuli
stressors
can,
therefore,
help
anticipate
population
responses
changing
conditions
inform
management.
However,
is
challenging
obtain
because
sampling
gears
do
not
provide
adequate
spatial
or
temporal
resolution,
potentially
alter
behaviours.
Traditionally,
most
studies
have
been
laboratory
experiments,
while
behaviour
in
situ
has
often
inferred
indirectly.
Advancements
imaging
sonar
technology
enable
the
study
of
behaviours
with
potential
address
understudied
relationships.
In
this
review
we
discuss
applications
among
a
meta-analysis
155
organisms
their
environments.
We
evaluate
performance
for
studying
inter-
intra-specific
interactions,
associations
sensitive
habitats
low-visibility
environments,
traditional
fisheries
gears.
examine
data
processing
analytical
methods
used
refine
taxonomic
manage
time
use
autocorrelation
through
sub-sampling,
extract
metrics
applied
ecological
processes,
automating
abundance
estimates
image
classification
goal
providing
resource
researchers.
IEEE Access,
Journal Year:
2024,
Volume and Issue:
12, P. 134486 - 134497
Published: Jan. 1, 2024
Acoustic
cameras
are
increasingly
used
for
continuous,
non-intrusive
recording
and
counting
of
fish
passage
in
natural
environments
artificial
structures
such
as
fishways.
However,
analysing
the
large
number
videos
recorded
is
time
consuming.
Although
automatic
reading
processes
have
been
developed,
poor
quality
acoustic
images,
including
discontinuity
signal
a
single
object,
challenging.
We
developed
an
innovative
method
videos.
Unlike
previous
methods,
it
focuses
on
swimming
locomotion
instead
morphological
properties
fish.
Each
image
pre-processed
to
remove
discontinuities
restore
entire
body
cluster
pixels.
The
set
pixels
then
tracked
retrieve
movement,
independent
displacement
fish,
using
mesh
solid
deformable
model.
deformation
which
subjected
between
each
pair
frames
(i.e.,
body)
summarised
map
passage.
Testing
dataset
four
species
strongly
suggested
that
maps
species-dependent.
These
results
must
be
extended
other
confirm
effectiveness
identification
characterisation
their
behaviour
camera
records.
North American Journal of Fisheries Management,
Journal Year:
2023,
Volume and Issue:
43(3), P. 743 - 757
Published: March 8, 2023
Abstract
A
combined
method
incorporating
an
imaging
sonar
and
underwater
cameras
was
tested
for
assessing
the
size
of
adult
Atlantic
Salmon
Salmo
salar
Striped
Bass
Morone
saxatilis
populations
in
one
main
tributaries
Miramichi
River,
New
Brunswick,
Canada.
The
number
fish
recorded
with
October
2019
apportioned
using
species
ratio
from
camera
data.
estimated
358
255
when
applied
every
day
274
337
monthly
applied.
counts
were
compared
to
catches
a
downstream
index
trap
net
values
trap‐net
catchability
proportion
ascending
same
tributary.
Depending
on
values,
sonar–camera
between
40%
190%
numbers
net.
For
Bass,
produced
lower
agreement
(sonar–camera
count
=
5–24%
adjusted
catch)
because
unlike
Salmon,
do
not
deterministically
migrate
up
tributary
autumn.
mostly
detected
overnight,
trends
daily
similar
net,
most
being
mid‐month
at
end
month.
similarity
catch
new
information
about
migration
timing
demonstrate
that
sonar–underwater
combination
can
provide
tributary‐specific
timely
population
River.
Frontiers in Ecology and Evolution,
Journal Year:
2024,
Volume and Issue:
11
Published: Jan. 15, 2024
Introduction
Diadromous
fish
populations
have
strongly
declined
over
decades,
and
many
species
are
protected
through
national
international
regulations.
They
account
for
less
than
1%
of
biodiversity
worldwide,
but
they
among
the
most
perceptible
linkages
between
freshwater
marine
ecosystems.
During
their
migration
back
forth,
diadromous
subjected
to
anthropogenic
threats,
which
river
damming
can
severely
limit
access
vital
habitats
jeopardize
population
sustainability.
Here,
we
developed
a
method
based
on
double-observer
modeling
approach
estimating
abundance
during
in
rivers.
Methods
The
relies
two
independent
synchronous
records
counts
that
were
analyzed
jointly
thanks
hierarchical
Bayesian
model
estimate
detection
efficiencies
daily
passage.
We
used
simulated
data
test
robustness
identify
conditions
under
be
used.
was
then
applied
empirical
annual
silver
eel
run
Touques
River,
France.
Results
analysis
datasets
study
case
gives
evidence
provide
robust,accurate,
precise
estimates
probabilities
total
set
dependent
information
provided
(annual
distribution
passage,
number
observation,
pairing
period,
etc.).
Discussion
Then,
various
counting
systems,
including
nomad
acoustic
camera
devices.
discuss
its
relevance
programs
continuity
restoration,
notably
quantify
restoration
associated
with
dam
removals.