Wonder
Log in
Research Outline
Prepared for Arnon | Delivered May 17, 2020
Fish Farm Monitoring Technology
Review your project details
Goals
To identify the main technologies used to monitor fish farms in order to inform a startup pitch.
View less
Early Findings
Submerged cameras
are the most common tool used for monitoring on fish farms today. Automated fish monitoring can be accomplished by applying computer vision algorithms to the video stream.
Computer vision techniques are expanding rapidly, with
computer vision methods
being able to measure several variables, including movement and clustering, fish size, sea lice infestation levels, skin state, and behavioral changes from chemical exposure.
Although variation in technologies used to monitor fish is now limited, the diversity within research methodologies is expansive, as researchers constantly look for new methods for collecting data.
Active hydroacoustic devices
are the most common technological tools besides cameras used to study fish in aquaculture.
Echo sounders
that obtain
e
c
h
o
g
r
a
m
s
describing vertical fish distribution and school density has been the most frequent application of hydroacoustic technology, although more advanced hydroacoustic devices are also in use within different marine industry sectors that can measure additional variables.
S
p
l
i
t
b
e
a
m
sonars for example can estimate fish swim speeds and the directions of individual fish, while
m
u
l
t
i
b
e
a
m
sonar systems
can provide 3D distribution data on fish movements. Sonar-based systems may be used to measure the size of individual fish by establishing the relationship between the target strength and mass or length.
Passive hydrophones
also provide data on the behavior of several fish species including
s
a
l
m
o
n
i
d
s
by recording the sounds emitted by the fish.
A fish farm in Norway known as
L
i
n
g
a
l
a
k
s
is using a n
ew hydro-acoustic system
that listens to the salmon as they feed in a cluster. When the fish have fed to their fill, the noise lessens as they swim away. Chief executive
E
r
l
e
n
d
H
a
u
g
a
r
v
o
l
l
hopes this will save lots of money in reduced feed, instead of wasting such large amounts.
Dave
O
k
e
t
c
h
, a Kenya-based actuarial scientist turned fish farmer, said that
internet sensor applications
that can detect the intensity of heat present in the ponds by degree is helping farmers. Water temperature dictates the amount of feed fish will be given on specific days while helping farmers
calculate the quantity of feed
for each day for the following months. Colder temperatures make it more difficult for digestion, and undigested food can decay in the stomach of the fish, causing deadly bacteria to grow and enter their bloodstream.
View less