What does OB mean in cichlids?

Can you keep zebra fish in a cichlid tank?

In many aquarium shops, this fish will still be found under its old name of Pseudotropheus zebra. It is an aggressive species, normally kept in a mixed African cichlids community aquarium. Due to the risk of hybridization, do not save any fry produced in this sort of setup.

Where do Red Zebra fish live?

The red zebra or Maylandia estherae is commonly found in Lake Malawi, the Eastern side of Africa. Along with the other twelve species of cichlids, they belong to a group called Mbunas. In local African language, this word means “rock-dwelling” or “rockfish”.

Where do Red Zebra fish come from?

There is also one famous red zebra fish farming in Florida. It is said that the red breeding specimens comes from this farm, especially those that have unusual color patterns or bright orange body. If you ask about the feeding, there is nothing to worry about.

What is the scientific name of the zebrafish?

The zebrafish has often been referred to as “Danio rerio”, but more recent molecular studies have suggested that it should belong to the genus Brachydanio, as Brachydanio rerio. The zebrafish is native to fresh water habitats in South Asia where it is found in India, Pakistan, Bangladesh, Nepal and Bhutan.

Are zebras cold water fish?

Zebras are primarily surface dwelling fish that favor moving waters. Technically considered a cold-water fish, this fish prefers water in the 64 to 75 F range. However, they will adapt to a wide range of water conditions.

What fish can live with zebra fish?

Any fish with long flowing fins, such as angelfish, bettas, and guppies, are potential targets of the active zebra looking for something to do. Good potential tankmates may include barbs, corydoras catfish, similar-sized gouramis, loaches, and swordtails. They are best kept in a school of five or more of their own kind.

How similar are humans and zebrafish?

Although humans may appear to be extremely different than zebrafish, we are actually much more similar to them than you might think. In fact, 70% of human genes are found in zebrafish.

Is it possible to study human diseases in zebrafish?

However, there is a limit on what types of diseases can be studied in zebrafish. Human diseases caused by genes that do not exist in zebrafish require a different animal model.

Why is the zebrafish a good model for studying human genes?

According to the genome sequencing data, the zebrafish shares 70% genes with humans and more than 84% of genes that cause human genetic diseases are present in the zebrafish, making it an excellent model for studying human gene functions, especially those that cause various human genetic diseases. Zebrafish is well known to be highly prolific.

What can zebrafish be used for?

Therefore, zebrafish are used more and more, for example, to study the function of genes, to create animal models for human diseases and to develop new human drugs. Adult zebrafish in the zebrafish facility at the Department of Molecular Biology and Genetics, Aarhus University, Denmark.

Why do zebrafish have two copies of the same gene?

Duplicated genes The zebrafish genome contains duplicated segments that resulted from a genome-wide duplication in the ray fin fish lineage after it diverged from the lobe fin lineage (that included avian and mammalian species). For this reason, zebrafish often have two copies of a gene that is present as a single copy in mammals.

How are zebrafish sex ratios determined?

While it is now clear that zebrafish in the wild utilize a genetic sex determination mechanism, it is also clear that sex ratios in domesticate lines can be greatly influenced by certain environmental factors, such as temperature, pH, oxygen concentration and rearing density.

Do zebrafish switch sex?

While mammals do not normally switch sex as adults, it is estimated that 2% of teleost species switch sex at some point during their life and in some species can switch sex multiple times (Avise & Mank, 2009). However, zebrafish do not belong to the 2% of species that switch sex as part of their normal life cycle.

Is zebrafish sex-linked or complex trait?

The detection of five different sex-associated regions from three independent genome-wide studies indicates that zebrafish SD is a complex trait, where multiple autosomal factors and not just one pair of sex chromosome, if any, will instruct individuals to assume one of the two sexes.

What are the advantages of zebrafish as an animal model?

As a vertebrate, zebrafish share considerable genetic sequence similarity with humans and are being used as an animal model for various human disease conditions. The advantages of zebrafish in comparison to other common vertebrate models include high fecundity, low maintenance cost, transparent embryos, and rapid development.

What is the difference between a zebrafish and a mouse?

While mice are evolutionarily more similar to humans because they are mammals, zebrafish have several advantages over their furry competitors. One important advantage of zebrafish is that the adults are small and prefer to be housed in large groups, or “shoals”. As a result, they require much less space and are cheaper to maintain than mice.

Are zebrafish related to humans?

In fact, 70% of human genes are found in zebrafish. Moreover, zebrafish have two eyes, a mouth, brain, spinal cord, intestine, pancreas, liver, bile ducts, kidney, esophagus, heart, ear, nose, muscle, blood, bone, cartilage, and teeth.

Is the zebrafish the best model for animal research?

In spite of rodents being the most widely used research model in the world, in recent decades the use of the zebrafish ( Danio rerio) model has exponentially increased among the scientific community.

What can zebrafish be used to study?

More recently, the zebrafish has been used to study mechanisms leading to human cardiac diseases and to model human congenital and acquired cardiac diseases.

What can zebrafish tell us about human disorders?

The zebrafish ( Danio rerio) is a powerful model organism for the study of vertebrate biology, being well suited to both developmental and genetic analysis. Large-scale genetic screens have identified hundreds of mutant phenotypes, many of which resemble human clinical disorders.

Is it possible to study human embryo development in zebrafish?

Mouse embryos are not clear and develop inside the mother, so the observation of live embryo development like that in zebrafish is not possible. However, there is a limit on what types of diseases can be studied in zebrafish. Human diseases caused by genes that do not exist in zebrafish require a different animal model.

Can zebrafish be used as a genetic model for cardiovascular disease?

Introduction The zebrafish offers several distinct advantages as a genetic and embryonic model system to study cardiovascular disease. One major advantage is that zebrafish are vertebrates that can be used for unbiased and whole-genome forward genetic screens.

What can zebrafish embryos tell us about human genetic disorders?

Or if the patient’s disease symptoms began during development in utero, knock-out or knock-in zebrafish embryos can be examined for gene expression changes (compared to embryos without the mutation) that could lead to abnormal development.

How are fish and humans related?

The Similarities Between Humans and Fish The Similarities Between Humans and Fish 895 Words4 Pages Human and fish are not closely related on the outside. Most people would not see how we can share same features with fishes, but scientists do know that these two species share homologous features.

What do zebrafish and humans have in common?

David Mawdsley, Heath Lab A paper published last month in Nature unveiled the long-awaited sequence of the zebrafish genome, revealing that zebrafish, mice and human have 12,719 genes in common. Put another way, 70% of human genes are found in zebrafish.

Why is the zebrafish an ideal model for studying cardiovascular disease?

The zebrafish is an ideal model for studying cardiovascular disease. First, having a closed cardiovascular system, the development of the cardiovascular system is highly conserved between fish and mammals.

Which genes are active during brain development in zebrafish?

Blaker-Lee A, et al. Zebrafish homologs of genes within 16p11.2, a genomic region associated with brain disorders, are active during brain development, and include two deletion dosage sensor genes. Dis Model Mech. 2012;5:834–851.