Native fishes and their behaviour (Channas again)

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Re: Native fishes and their behaviour (Channas again)

Postby Soumya Sarkar » Tue Sep 01, 2015 5:51 am

Want to share some more Channa behaviour....

They have a very unnatural behaviour (specially of C. punctatus & gachua) that during nightfall they love to be in shallow water. It will be more correct if I say it is extremely shallow. May be only half a finger deep.....

Nights of this rainy season they are easily found in flooded fields and sometimes with extremely low or little water. My thought was they spend the night motionlessly but after spending some nights watching them in flooded fields I must say they also remain quite active in night also. If any prey species (it may be any small fish or any insect or their larva) is found in the small water they readily jump on it. More over that have seen those attacking small toads and frogs..... :p

Whenever disturbed they can jump with extreme ability, sometimes by this kind of behaviour they found themselves literally out of water. And again they return towards water by dragging itself through the ground.....

Some pictures of their night hideouts..... :)
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Re: Native fishes and their behaviour (Channas again)

Postby arindamk » Tue Sep 01, 2015 6:45 am

Do C Gachu can also have blue-ish colour? recently I have collected some Gachua babies , now they are growing up and I see some are blue-ish where as others are yellow ish
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Re: Native fishes and their behaviour (Channas again)

Postby Abhirup.mecho » Tue Sep 01, 2015 7:53 am

When juvenile they do have a lot of blue specially on the underside of their heads bt gradually it disappears only the anal fin colour remains

@soumya
Great info again,my grandma used to say they collected taki, koi, gojar etc often from the leaf litter. Rumbling of the leaves made them aware that such fishes are travelling between ponds. Btw any idea what taki is?
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Re: Native fishes and their behaviour (Channas again)

Postby Abhirup.mecho » Tue Sep 01, 2015 7:54 am

Btw any idea on the king of snakheads, barca?
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Re: Native fishes and their behaviour (Channas again)

Postby Soumya Sarkar » Tue Sep 01, 2015 8:01 am

arindamk wrote:Do C Gachu can also have blue-ish colour? recently I have collected some Gachua babies , now they are growing up and I see some are blue-ish where as others are yellow ish


As the babies grow you can experience not only blue but orange and green tinges also..... :)
Abdominal area is rather yellow to brownish.....
Especially on the borders of anal and dorsal fins you can find maximum colour pattern.
Also in some specimen you can have colour near the base of pectoral fins....

What's more as per my observation, I can say they vary much in colour from one another and have some ability of taking disguise as per surrounding colour is.... :)
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Re: Native fishes and their behaviour (Channas again)

Postby avik » Wed Sep 02, 2015 2:51 am

Great info again. So u mean Everyday they come to shallow water at night and go back to waterbody during dawn?

Mecho what is gojar? Wild guess.. singi or magur!! taki is the channa right. I think we should make a trip to Bangladesh for all these fishes.. :)
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Re: Native fishes and their behaviour (Channas again)

Postby Soumya Sarkar » Wed Sep 02, 2015 6:56 am

avik wrote:Great info again. So u mean Everyday they come to shallow water at night and go back to waterbody during dawn?


Exactly, at dawn they disperse towards comparatively deeper water source.... :)

avik wrote:Mecho what is gojar? Wild guess.. singi or magur!! taki is the channa right. I think we should make a trip to Bangladesh for all these fishes.. :)


Dont know the name gojar, but gojal is another Bengali name of Shal (Channa marulius). It is generally used near Bangladesh border regions of Bengal like some parts of Nadia and Murshidabad. Goijar may may be due to Bangladeshi accent.... :p
Taki is C. punctatus to be exact, another common name is Gorui..... :)
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Re: Native fishes and their behaviour (Channas again)

Postby Soumya Sarkar » Wed Sep 02, 2015 7:05 am

Abhirup.mecho wrote:@soumya
Great info again,my grandma used to say they collected taki, koi, gojar etc often from the leaf litter. Rumbling of the leaves made them aware that such fishes are travelling between ponds. Btw any idea what taki is?


Yes same story heard from my grandparents also.... :D
and experienced the same....
Those traditional knowledge are extremely valuable and can be the baseline data of proper scientific research... :-bd
Taki = C. punctatus
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Re: Native fishes and their behaviour (Channas again)

Postby Soumya Sarkar » Wed Sep 02, 2015 7:10 am

Abhirup.mecho wrote:Btw any idea on the king of snakheads, barca?


No sir my research fields are restricted within southern Bengal. Have no proper idea about any other parts, especially regarding fish.... :(
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Re: Native fishes and their behaviour (Channas again)

Postby avik » Wed Sep 02, 2015 7:31 am

Soumya Sarkar wrote:
avik wrote:Great info again. So u mean Everyday they come to shallow water at night and go back to waterbody during dawn?


Exactly, at dawn they disperse towards comparatively deeper water source.... :)

What may be the reason? U find this in smaller channas only? Those deeper water might have bigger channa, a potential predator, so they prefer sleeping out of reach of those big fishes??
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