Can zebra danios live in cold water?

What is the ecology of the zebrafish Danio rerio?

The zebrafish Danio rerio, is an important model organism in developmental genetics, neurophysiology and biomedicine, but little is known about its natural ecology and behaviour. It is a small, shoaling cyprinid, native to the flood-plains of the Indian subcontinent,…

What kind of fish is a Brachydanio rerio?

zebrafish, Brachydanio rerio, in the laboratory. Copeia 1974, 195-204. E ATON, R. C. & F ARLEY, R. D. (1974a). Growth and reduction of depensation of the zebrafish Brachydanio rerio, reared in the laboratory.

How does lighting affect zebrafish growth and survival?

In the underwater environment, the properties of light (intensity and spectrum) change rapidly with depth and water quality. In this article, we have described how and to what extent lighting conditions can influence the development, growth, and survival of zebrafish.

What is the scientific name of Brachydanio?

Brachydanio frankei Meinken, 1963; Danio rerio (Hamilton, 1822); Cyprinus chapalio Hamilton, 1822; Cyprinus rerio Hamilton, 1822; Danio lineatus Day, 1868; Perilampus striatus McClelland, 1839 Brachydanio: from the Ancient Greek βραχύς (brakhús), meaning ‘short’, and Dhani, a Bengalese vernacular term for small, minnow-like cyprinids.

Can zebrafish survive in chlorine?

Zebrafish can tolerate a wide range of water quality parameters (3), although they do not handle rapid changes in short periods of time (4).Chlorine is an important chemical for water purification at water treatment plant, but can be a fatal toxin to zebrafish (3).

Does light deprivation affect zebrafish development?

A third group remained under DD to investigate the effects of light deprivation upon zebrafish development. The results revealed that the hatching rate was highest under blue and violet light, while total length at 30 dph was greatest under blue, white, and violet light. Red light led to reduced feeding activity and poor survival (100% mortality).

What kind of fish is Devario anomalus?

Devario anomalus, a new species of freshwater fish from Bangladesh (Ostariophysi: Cyprinidae). Phylogenetic Analysis of the Asian Cyprinid Genus Danio (Teleostei, Cyprinidae).

Is the zebrafish a model species for Developmental Genetics?

The zebrafish as a model developmental genetics (Vascotto et al., 1997). Se veral attributes of the species explain its four months. Shimoda et al. 1999, Postlethwait et al. 1998).

Do zebrafish need vitamins?

Vitamins are dietary essential organic compounds and are required in very small amounts by fish. Although the precise requirements for zebrafish are unknown, most live foods are rich in vitamins and well formulated prepared diets will contain adequate levels of these compounds.

How does the photoreceptive system work in fish?

In the case of fish, the aquatic environment poses particular challenges for the photoreceptive mechanisms, which entrain the circadian clock. The water column acts as a potent chromatic filter, modifying the sun’s spectral profile since wavelengths below violet (λ600 nm) are selectively absorbed.

How are the eyes of early fish larvae adapted for foraging?

As evidenced by a typically monochromatic all-cone retina, the eye of early fish larvae is adapted for efficient foraging in bright light.

What triggers zebrafish camouflage behavior?

Wagle M, Mathur P, Guo S. Corticotropin-releasing factor critical for zebrafish camouflage behavior is regulated by light and sensitive to ethanol. J Neurosci2011;31:214–224 [PMC free article][PubMed] [Google Scholar]

Is a complete diet necessary to produce sexually mature zebrafish?

Further, differences in sexual maturity were visually observed, suggesting that certain still undefined dietary nutrients are necessary to produce sexually mature zebrafish at 13 weeks, further implying the importance of a nutritionally complete D. rerio diet.

Do different dietary treatments affect feeding behavior in zebrafish?

No differences in feeding behavior were observed among the different dietary treatments throughout the 9-week study. All feeds utilized in the trial initially floated and were readily consumed, but would sink over time. Zebrafish continued consuming feed particles on the bottom of the enclosed fine-mesh cages.

What factors affect the growth of zebrafish?

Maturation and growth rate During zebrafish development, the rate of zebrafish growth is influenced by many factors: water quality, temperature, genetics, food quality and availability, and population density. Even zebrafish grown in standardized conditions show a range of sizes and maturation states as they age (Fig. 1A).

How does lighting affect aquarium life forms?

Aquatic life forms experience a fluctuating amount of darkness and light in their natural habitat. That’s why, when building a healthy aquarium, you must mimic the natural lighting conditions of the environment, to guide your fish to healthy life and development.

What is the pigment phenotype of zebrafish?

Pigment in the zebrafish varies distinctly throughout development, beginning with fish that are nearly optically clear, through adult fish with distinct patterns of yellowand blackpigment. (A)Pigment phenotype 1 (B)pigment phenotype 2 (C)pigment phenotype 3 (D)pigment phenotype 4 (E)pigment phenotype 5.

What is the size of an adult zebrafish?

Similarly, adult zebrafish are generally longer than 18 mm SL. P5 classifications, including pigment (Fig. 6N–P), generally define larger fish beginning at 18.0 mm SL (Fig. 6A). Fish with the majority of the classifications that are P5 are considered adults.

Can zebrafish traits be easily observable without invasive methods?

These traits should be easily observable without invasive methods, such that analysis of live fish is possible without stressing or damaging the zebrafish. We examined four traits: pigment pattern, tail, anal, and dorsal fin maturation.

What can we learn from zebrafish transgenesis?

The increase in zebrafish genomic resources together with more sophisticated protocols for transgenesis and other tools referred above have contributed not only to unravel the genetic networks controlling development, but also generate zebrafish disease models with application in human biomedicine.

What’s new in zebrafish research?

The growing interest in zebrafish research was paralleled by an increase in tools and methods available to study this fish. While research initially focused on forward genetics approaches (mutagenesis screens), in recent years the reverse genetics methods have been developed considerably (RNA interference, morpholino knock-down, TILLING).

Why study zebrafish as a model organism?

In addition, zebrafish are increasingly used as a genetic model organism for aquaculture species and in toxicogenomics. As we describe here, this diminute fish is a versatile model organism for many fields of research.

Is Devario anomalus a cyprinid?

Devario anomalus, a new species of freshwater fish from Bangladesh (Ostariophysi: Cyprinidae). Phylogenetic Analysis of the Asian Cyprinid Genus Danio (Teleostei, Cyprinidae). Molecular phylogenetic interrelationships of the south Asian cyprinid genera Danio, Devario and Microrasbora (Teleostei, Cyprinidae, Danioninae).