نتایج جستجو برای: ornamental fish xiphophorus helleri

تعداد نتایج: 109255  

Journal: :Neotropical Ichthyology 2021

Abstract This study evaluated fish beta diversity in six headwater creeks located the area affected by largest ornamental aquaculture center implemented Minas Gerais State, southeastern Brazil. We sampled assemblages 2017 and 2018 to investigate changes assemblage structure (species richness diversity), comparing these data with historic species pool. recorded 60 species, of which 16 were nativ...

ژورنال: آبزیان زینتی 2021
Khanjani, Mohammad Hossein, Sharifinia, Moslem,

      The aquaculture industry has grown dramatically in recent years, with a multimillion-dollar market. There are a variety of freshwater fish, marine fish, mollusks, and ornamental fish cultivated in this industry. The pigment and coloring of ornamental fish are important characteristics for marketing. In edible fish, carotenoids are responsible for the pigmentation of body tissue, while in ...

Journal: :The Journal of General Physiology 1937
W. J. Crozier E. Wolf Gertrud Zerrahn-Wolf

Flicker response curves have been obtained at 21.5 degrees C. for three genera of fresh water teleosts: Enneacanthus (sunfish), Xiphophorus (swordtail), Platypoecilius (Platy), by the determination of mean critical intensities for response at fixed flicker frequencies, and for a certain homogeneous group of backcross hybrids of swordtail x Platy (Black Helleri). The curves exhibit marked differ...

Journal: :Genetics 1991
D C Morizot S A Slaugenhaupt K D Kallman A Chakravarti

Analysis of genotypes of 76 polymorphic loci in more than 2600 backcross hybrid individuals derived from intra- and interspecific genetic crosses of fishes of the genus Xiphophorus (Poeciliidae) resulted in the identification of 17 multipoint linkage groups containing 55 protein-coding loci and one sex chromosome-linked pigment pattern gene. Multipoint linkage analyses identified highly probabl...

ژورنال: آبزیان زینتی 2021

The ornamental fish farming industry, which in the past was monopolized by a few countries in the world, has now expanded to 125 countries and our country is developing rapidly. The purpose of writing this article is to evaluate the situation of Iran in the world and future research of ornamental fish using Environmental Scanning model and strategic radar method. A balanced scorecard developed ...

ژورنال: آبزیان زینتی 2019
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In recent years, world trade in ornamental fish has grown significantly. Southeast Asia industry use this potential to export these species to other countries. Considering the importance of ornamental fish, attempting to produce more marketable fish is one of the goals of ornamental fish breeders. In this regard, new methods such as coloring for producing the best fish variety, sex change aimed...

ژورنال: آبزیان زینتی 2021

Ornamental fish are the most popular pets in most parts of the world. The trade in ornamental marine fish began around 1930, and has expanded significantly in recent years, with the maintenance of home aquariums and public spaces. International ornamental fish trade is a multibillion-dollar global industry, much of which is in coral reefs caught in the Indo-Pacific and Caribbean and marketed in...

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