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FISH IDENTIFICATION
Anurag BabuEWRG ,CES, IISc, Bangalore
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PHYLUM
CHORDATA
INFRAPHYLUM
CYCLOSTOMAT
A
INFRAPHYLUM
GNATHOSTOMA
SUPER CLASS
AGNATHA
SUPER CLASS
OSTEICHTHYES
SUPER CLASS
Incertae serdis
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CLASS
PLACODERMI
CLASS
ACANTHODII
CLASS
CONDRICHTHYES
CLASS
ACTINOPTERYGII
CLASS
SARCOPTERYGII
CLASS
PETROMYZONTIDA
CLASS
CONODANTA
CLASS
MYXINI
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CLASS
THELODONTI
CLASS
ANASPIDA
CLASS
PTERASPIDOMORPHI
CLASS
CEPHALASPIDOMORPHI
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So , What are the Steps
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FISH SAMPLING
What is the purpose of our Sampling ?
Use suitable gears Gears based on purpose
Active Gear/ Sampling
Passive Gear/ Sampling
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Cast Net
AnglingGill Net
Fyke Net
Scoop Net
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FISH IDENTIFICATION
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ANATOMICAL
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BODY SHAPE
Torpediform
Dorso Ventrally Flattened
Ribbon like
Eel like
Spheroid
Laterally Flattened
Arrow like
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COLOR & PATTERN
?
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Etroplus maculatus
Etroplus suratensis
Scatophagus argus
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MERISTIC
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FACIAL & CRANIAL BONES
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TYPE OF MOUTH
Funneled
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Silver bellies Mouth Classification
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EYE
Caranx latus
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EYE
Caranx latus
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Scophthalmus maximus Hippoglossus hippoglossus
LEFT OR
RIGHT
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FINS
Caranx ignobilis
DORSAL FINS
PECTORAL FIN PELVIC FIN ANAL FIN
CAUDAL FINS
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DORSAL FIN
Spiny Dorsal
Adipose Dorsal
Rayed Dorsal
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ANAl FIN
Spiny & Rayed Anal
Rayed Anal
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PECTORAL
FINS
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PELVIC
FINS
Abdominal
Thoracic
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CAUDAL
FINS
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CAUDAL
FINS
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What makes Spine & Ray
Different ?
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GILL RAKERS
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SCALES
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LATERAL LINE
CONTINUITY
POSITION
CURVE
SCUTES
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IDENTIFICATION
KEYS
DICHOTOMOUS POLYTOMOUS
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FIN
FORMULA( Neogobius melanostomus (Pallas, 1811).)
D1 VI (V-VII); D2 I + 14-16 (13-16); A I + 11-13 (11-14); P 18-19 (17-20).
The anterior dorsal fin has 6 spines, ranging from 5-7
The posterior dorsal fin has one spine and 14-16 soft rays, ranging from 13-16
The anal fin has one spine, 11-13 soft rays, ranging from 11-14
The pectoral fins have 18-19 soft rays, ranging from 17-20
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MORPHOMETRIC
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LET’S try Identifying A FISH !!
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FIN
FORMULA( Neogobius melanostomus (Pallas, 1811).)
D1 VI (V-VII); D2 I + 14-16 (13-16); A I + 11-13 (11-14); P 18-19 (17-20).
The anterior dorsal fin has 6 spines, ranging from 5-7
The posterior dorsal fin has one spine and 14-16 soft rays, ranging from 13-16
The anal fin has one spine, 11-13 soft rays, ranging from 11-14
The pectoral fins have 18-19 soft rays, ranging from 17-20
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• Kill the fish using anaesthetics ( e.g.. Clove oil)
• Remove Scales & other subsamples from right
side of fish.
• Scientific photograph Showing scale of the
collected specimen.
• Preservatives
Formaldehyde - 1:10
Peformaldehyde
Alcohol -70 %
• Proper labeling.
SAMPLE
PRESERVATION
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