Grass Carp

This file contain presentation on freshwater fish Grass Carp (Ctenopharyngodon idella).

1. A Presentation on Freshwater Fish
Grass Carp
NAME:RIADUZZAMAN BHUIYAN
ROLL:ASH1402008M
DEPT.:FISHERIES&MARINESCIENCE

2. Introduction
ThegrasscarpisafreshwaterfishspeciesofthefamilyCyprinidae,andtheonlyspecies
ofthegenusCtenopharyngodon.
CtenopharyngodonandidellaarebothGreekwords,meaning"comb-likethroat-teeth"and
"distinct"respectively.IntheUnitedStates,thefishisalsoknownaswhiteamur.
LocalName :GrassCarp,GrassCup
EnglishName :GrassCarp,WhiteAmur
ScientificName :Ctenopharyngodonidella

3. Ctenopharyngodon idella(Grass Carp)

4. Classification
Kingdom : Animalia
Phylum : Chordata
Sub-phylum : Vertebrata
Super-class : Gnathostomata
Class : Osteichthyes
Sub-class : Actinopterygii
Order : Cypriniformes
Family : Cyprinidae
Genus : Ctenopharyngodon
Species : Ctenopharyngodonidella

5. Description
Bodystoutand
elongate.
Headbroad,witha
shortrounded
snout.
Bodydarkgrey
above,silveryon
theflanksand
belly;finsdark.
Averagelengthis
about60–100cm.

6. External Features
Mouth Position
Mouth sub-terminal;
upper jaw slightly
protractile.
Scale
Scales cycloid. Scales
of large size; lateral
line with 40-42 scales.
Teeth
Broad, ridged,
pharyngeal teeth are
arranged in a 2, 4-4, 2
formula.

7. Fin
Dorsal fin
Dorsal fin margin
straight.
Caudal fin
Caudal fin forked.
Pectoral fin
Pectoral fins fairly
small.

8. Pelvic fin Anal fin

9. Habits and Habitats
Grasscarpoccursinlakes,ponds,
pools,andbackwatersoflarge
rivers,preferringlarge,slow-
flowingorstandingwaterbodies
withvegetation.
Itisafishoflarge,turbidrivers
andassociatedfloodplainlakes,
withawidedegreeoftemperature
tolerance(about20to30°C).
Spawnsonriverbedswithvery
strongcurrents.

10. Food and Feeding Habit
Adults are exclusively herbivorous.
Feeds on higher aquatic plants and
submerged grasses.
Also takes detritus, insects and other
invertebrates.
The fry and longer fish takes
substances like cereal brans, silkworm
pupae etc.
Detritus Insects

11. Origin of Species
It is originated in China (Amur river);native to China, Malaysia and
Eurasia.
It’s native Range: Eastern Asia, from southern Russia to northern
Vietnam.

12. Distribution
Grass carp are native to
large rivers in Asia,
ranging from the Amur
River in China and Siberia
south to the West River in
China and Thailand.
It has been introduced to
70 countries including the
US., Taiwan, Japan,
Mexico, India, Malaysia,
and several European
countries.

13. Economic Importance
Positiveaspect:
Itisimportantasasourceofprotein.
Asacontrolagentinrestrictingpond&canalweedgrowth.
InBangladesh,ithasbeenintroducedtoclearpondsdensely
infestedwithHydrillaandNaja.
Negativeaspect:
Consideredasapotentialpestinmostcountriesbecauseofthe
damagecausedtosubmergedvegetation.

14. Ecological Role
Asaherbivorousspecies,GrassCarp
playsanimportantroleincontrolling
weedsinaquaticenvironment.

15. Status and Conservation
Itislesscatchinriverorrunningwaterbutgoodcatchinponds,
lakes,pools,floodplainsetc.
NotlistedinRedListofIUCNBangladesh(2000).
Thisspeciesiscommon;butconservationisneeded.

16. Aquaculture Status
Possibletocultureinthelargeanddeeplakesandponds.
InBangladesh,privatehatcheryoperatorsbreedthespecies
artificiallyandproducefryforstockingwater-bodies.
Rearedintheaquariums.

17. Remarks
Thoughariverinefishoffreshwaterhabitats,thisspeciescanalso
tolerateslightlybrackishwater.Insomecountries,themainpurpose
ofitsintroduction,inadditiontoculture,isbiologicalaquaticweed
control.