All aspects of fish biology

• Diana Handa

  Can anybody advise how to identify sex chromosomes of fish labeo rohita from its karyotype?

  Can anybody advise how to identify sex chromosomes of fish labeo rohita from its karyotype?

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  • 
    Dr. J.P. Srivastava replied

    contact to NBFGR Lucknnow for this.

    19 days ago
• Oleksii Khudyi

  What are the reasons for downstream migration of silver carp and bighead carp through a hydro power plant?

  Over several years in the early spring in the Dniester reservoir (Ukraine, the Eastern Europe) large individuals of a silver carp (Hypophthalmichthys molitrix) and a bighead carp (HypophthalmichthysOver several years in the early spring in the Dniester reservoir (Ukraine, the Eastern Europe) large individuals of a silver carp (Hypophthalmichthys molitrix) and a bighead carp (Hypophthalmichthys nobilis) in large quantities perish during migration from upper reservoir to the bottom. Why do the silver carp and a bighead carp accumulate near a dam for 10-14 days in the early spring (if does not get to turbines)?

  

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  • 
    Jimmy Lin replied

    Duan, X. B., S. P. Liu, et al. (2009). "Changes in abundance of larvae of the four domestic Chinese carps in the middle reach of the Yangtze River, China, before and after closing of the Three GorgesDuan, X. B., S. P. Liu, et al. (2009). "Changes in abundance of larvae of the four domestic Chinese carps in the middle reach of the Yangtze River, China, before and after closing of the Three Gorges Dam." Environmental Biology of Fishes 86(1): 13-22. This paper may be useful.

    Changes in abundance of larvae of the four domestic Chinese carps.pdf

    Apr 27, 2012
• Dupam Satish

  How to identify oreochromis mosambicus?

  Identify this fish exactly which available in fresh waters

  

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  • 
    Dupam Satish replied

    Thank you very much Sir.

    Apr 17, 2012
• Jimmy Lin

  How to get the indicator species from our sample data?

  There are five sites along the river and each site was conducted fish surveys from 2005-2011 for 7 years. So how to analyse the fish data and get the Indicator Species? Does it make sense? The dataThere are five sites along the river and each site was conducted fish surveys from 2005-2011 for 7 years. So how to analyse the fish data and get the Indicator Species? Does it make sense? The data format is attached. I'm a green hand on fish assemblage studies. Thanks.

  fish data.xls

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  • 
    Luis Tito de Morais replied

    You are most welcome Jimmy. Please let us know if you succeed. Cheers

    Apr 15, 2012
• Graeme Smith

  Do Fish have REM Sleep?

  Fish are earlier than reptiles in the evolutionary tree, in most cases, (some were reptiles but returned to the water) so they probably don't as a general rule have spindling cells in theirFish are earlier than reptiles in the evolutionary tree, in most cases, (some were reptiles but returned to the water) so they probably don't as a general rule have spindling cells in their musculature, Spindling seems related to REM sleep paralysis, so I wonder do Fish have REM sleep?

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  • 
    Graeme Smith replied

    How would you test to find out? is there such a thing as a fish EEG? EOG? etc.

    Mar 7, 2012
• J R Dhanze

  What is the Order of Channa sps?

  Murral that is fish species under the genus Channa are commercially important but there is confusion as far as its taxonomic hierarchy is concerned, can anyone let me know the correct order of familyMurral that is fish species under the genus Channa are commercially important but there is confusion as far as its taxonomic hierarchy is concerned, can anyone let me know the correct order of family Channidae?

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  • 
    Luis Tito de Morais replied

    Hi all, I think that the correct answer is "The status is unclear". Maybe some new insights will come from works like this one : Li, B., A. Dettaï, C. Cruaud, A. Couloux, M. Desoutter-Meniger, etHi all, I think that the correct answer is "The status is unclear". Maybe some new insights will come from works like this one : Li, B., A. Dettaï, C. Cruaud, A. Couloux, M. Desoutter-Meniger, et G. Lecointre. 2009. RNF213, a new nuclear marker for acanthomorph phylogeny. Molecular Phylogenetics and Evolution 50:345–363. doi: 10.1016/j.ympev.2008.11.013. The paper is available here: http://www.normalesup.org/~bli/Papers/Li_et_al_2009_RNF213.pdf J.R., I suggest you to contact the authors of the paper. They may be of help. HTH ltdm

    Mar 5, 2012
• Jimmy Lin

  Is the fishway or fishladder valid for the conservation of fish resources in the Yangtze River Basin?

  The Yangtze River is one of the largest and longest rivers of the world, next only to Nile River and the Amazon River. About four hundred fish species were found in the Yangtze basin, including manyThe Yangtze River is one of the largest and longest rivers of the world, next only to Nile River and the Amazon River. About four hundred fish species were found in the Yangtze basin, including many migratory fish. While 19 proposed dams on the upper reaches of the Yangtze are planned to build, upstream from the massive Three Gorges project near Yichang (David Biello, 2009).

  http://www.springerlink.com/index/K235568332321746.pdf

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  • 
    Jimmy Lin replied

    Before any protective measures, it is need to study the swimming behaviour of fishes proteced. Up till now, there were few special study in the behavioral research of endemic fish domestically.

    Mar 4, 2012
• Pratap Patle

  What are the role of melanophores within the olfactory system?

  We observed distinct melanophores in olfactory raphae of fish. But we could not trace out the role of melanophores within it. Can anyone suggest what would be the role of melanophores in theWe observed distinct melanophores in olfactory raphae of fish. But we could not trace out the role of melanophores within it. Can anyone suggest what would be the role of melanophores in the olfactory system?

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  • 
    Rajendra Tijare replied

    Probabaly it take part in smell sense and effects on its behaviour

    Feb 27, 2012
• Rinku Arora

  Fish blood

  Is there any nucleus in fish red blood cells. Is fish blood different from mammalian blood in composition and functions?

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    Rinku Arora replied

    thanx a lot Luis, i got the paper and is good enough. thank u.

    Feb 23, 2012
• Sutharshiny Sathyaruban

  How is indicate the relationship of lipid profile of tropical multiple spawner fish?

  Hi friends, I am working on lipid profile of fish. I cannot explain the relationship between lipid classes and seasonal because it is multiple spawner and tropical fish. I caught all size of fishHi friends, I am working on lipid profile of fish. I cannot explain the relationship between lipid classes and seasonal because it is multiple spawner and tropical fish. I caught all size of fish throught out the year because it has lengthy life span too.

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    Luis Tito de Morais replied

    Hi Sutharshiny, This paper and references therein may be of some help: Arrington, D. A., B. K. Davidson, K. O. Winemiller, et C. A. Layman. 2006. Influence of life history and seasonal hydrology onHi Sutharshiny, This paper and references therein may be of some help: Arrington, D. A., B. K. Davidson, K. O. Winemiller, et C. A. Layman. 2006. Influence of life history and seasonal hydrology on lipid storage in three neotropical fish species. Journal of fish biology 68:1347–1361. It may be dowloaded here : http://wfsc.tamu.edu/winemiller/lab/PDFs/Arrington_etal_2006_JFB-lipids.pdf Hope This Helps ltdm

    Feb 23, 2012
• Lucky Onyia

  Anyone who can help interprete the data on DNA sequence of Clarias and Heterobranchus species?

  I received the result of my analysis of my data on DNA sequences of my research fish with explanation

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  • 
    Atse BOUA CELESTIN replied

    I am a specialist of catfish (reproduction, fry rearing and growth of fish and genetic characterization ) I can help you for your data analysis

    Feb 22, 2012
• Wang Kun

  Fish can't get free from the law of refraction. How can they lock on an object above water?

  I learn that a kind of fish prey insects above water. It's amazing!!! How can they made it ?

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  • 
    Wang Kun replied

    Thank you very much! And the anwsers make it more interesting and complex. I hope we can get more about it some day. Good luck!!

    Nov 2, 2011
• Ása Johannesen

  Does any of you work with cleaner fish?

  I'm finding quite a bit on wrasse, but I'm trying to find literature on lumpfish or lumpsuckers and their behaviour ecology with regards to foraging/feeding. I'm about to start a project on theirI'm finding quite a bit on wrasse, but I'm trying to find literature on lumpfish or lumpsuckers and their behaviour ecology with regards to foraging/feeding. I'm about to start a project on their suitability for commercial use in salmon cleaning. Knowledge of their social behaviour and any other behavioural needs (do they need shelters?) would also be appreciated.
• Md, Abul Hasan Roni

  Which marine fish contains highest % of lipid?

  Both saturated & unsaturated..
• Kostas Kapiris

  Project

  I am interest to participate in any proposal concerning marine decapods, fish biology and ecology. Special interest on deep waters biology

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  • 
    Dr.Rashmi Tripathi replied

    as u were asking me i clarified things on my part but since we are talking about collaboration we both will have to contribute and the question is how and in what way.This is what we have to plan andas u were asking me i clarified things on my part but since we are talking about collaboration we both will have to contribute and the question is how and in what way.This is what we have to plan and discuss ,so you also suggest something. with regards! Rashmi Tripathi

    Aug 7, 2011