What is a group of X-ray tetras called?

Where do X ray tetras live?

Ulrey was an American marine biologist who died in 1932. X ray tetras are native to South America, specifically in Venezuela, Amazon, Orinoco, and coastal river drainages of the Guianas in both acidic and alkaline waters. They occur in calm coastal waters that are often brackish.

Are X-ray tetras good pets?

X-ray tetras have been popularly kept as fish tank pets, as they are attractive and quite resilient, however they are a schooling fish and as such it is best if they are kept in groups of at least six.

How many X-ray tetras can be kept together?

As a shoaling fish, the X-ray tetra should be kept in groups of at least 6, preferably over 10.

What does an X ray tetra eat?

The X ray tetra is a popular fish in home aquariums, and is bred in high numbers for this purpose. The X-ray tetra lives in large shoals. In the wild it feeds on small insects, worms, crustaceans and planktonic animals.

Why is the fish measured before Xray?

The fish is measured to determine which technique will be used to make diagnostic quality images of the animal. The technique is the combination of settings on the radiograph machine which produce the X-rays. These settings control the strength, number and duration of X-rays that are produced.

When was the X-ray tetra first discovered?

They were first described by Ulrey in 1894 and have since become one of the most popular freshwater fish kept in artificial aquariums today. Although the X-Ray Tetra is the only known species in its genus, it is closely related to other small and colorful South American fish, including the nearly 100 other tetra species.

What makes the X-ray tetra a great addition to your tank?

This combination of physical features creates an interesting addition to any tank. Originally, the X-Ray Tetra comes from coastal rivers in South America. Those rivers vary quite a bit when it comes to water quality. Thus, the X-Ray Tetra is highly adaptable.

How accurate is a fish test for breast cancer?

In most cases, FISH testing can confirm whether the cancer is HER2-positive or HER2-negative. HER2 test results aren’t always accurate. If an initial FISH test is inconclusive or the results are considered borderline, your doctor may request an additional biopsy to test another sample.

What is the difference between fish and bright field ish testing?

The two main types of ISH testing are fluorescence in situ hybridization (FISH) and bright-field ISH. FISH testing is considered the standard for HER2 testing. FISH testing is considered more accurate than bright-field ISH and looks at DNA to see how many copies of the genes exist.

What is an X-ray fish called?

Pristella maxillaris, the only species in the genus Pristella, is commonly known as the X-ray fish or X-ray tetra because of its translucent body. It is a widely distributed and adaptable fish, found in the Amazon and Orinoco basins, as well as coastal rivers in the Guianas in both acidic and alkaline waters.

What is the scientific name of the X-ray fish?

“X-ray fish” redirects here. For Kryptopterus bicirrhis, see Kryptopterus bicirrhis. For the glassfish within family Ambassidae, see Asiatic glassfish. Pristella maxillaris is a species of characin in the genus Pristella, and is commonly known as the X-ray fish or X-ray tetra because of its translucent body.

Is a black neon tetra a good fish to keep?

Black neon tetras are a great fish for beginner fish keepers due to the fish’s pleasant nature and simple dietary needs. Black neon tetras are a beautiful addition to any aquarium, but larger fish may pose a threat to this small species. Should You Get a Black Neon Tetra for Your Aquarium?

What kind of tank does an X ray tetra need?

Short description. The X-ray tetra is a very peaceful species and will do well in a community tank. They make a great addition to a South American species tank but make sure that the other tank mates are of a similar size and temperament.

What is the temperament of an X-ray tetra?

The X-ray tetra is a very peaceful species and will do well in a community tank. They make a great addition to a South American species tank but make sure that the other tank mates are of a similar size and temperament.

How do you measure fish size?

Fish regulated by lower jaw fork length are measured in a straight line from the anterior most part of the lower jaw (tip of the lower jaw) to the fork in the tail. Stone crab claws must measure at least 2 7/8-inches in length measured by a straight line from the elbow to the tip of the lower immovable finger.

How is the length of a finfish measured?

The carapace is measured beginning at the forward edge between the rostral horns, excluding any soft tissue, and proceeding along the middle to the rear edge of the carapace. The state of Florida has wrestled with how to measure saltwater finfish since 1925. In 1925 the Legislature first enacted length measurements for marine finfish.

What is fish and why is it important for Cancer Research?

Each type of cancer may have its own set of chromosomal changes and relevant probes. FISH not only helps identify the initial genetic changes in a disease process like cancer, but it can also be used to monitor response to therapy and disease remission.

What is the difference between fish and Cytogenetic Cancer testing?

An advantage of FISH is that it doesn’t have to be performed on cells that are actively dividing. Cytogenetic testing usually takes about three weeks, because the cancer cells must grow in lab dishes for about 2 weeks before they can be tested. In contrast, FISH results are usually available from the lab within a few days. 7

How reliable is FISH testing for bladder cancer?

In the diagnosis of bladder cancer, for example, FISH testing of urinary cells may be more reliable than a standard test that looks for abnormal cells. In addition, FISH may detect bladder cancer recurrences three to six months earlier.

Why isn’t FISH testing more widely used for breast cancer?

Because FISH testing is expensive and not widely available, it’s not as commonly used as another breast cancer test: ImmunoHistoChemistry (IHC).

What is the difference between the different fish techniques?

The differences between the various FISH techniques are usually due to variations in the sequence and labeling of the probes; and how they are used in combination. Probes are divided into two generic categories: cellular and acellular. In fluorescent “in situ” hybridization refers to the cellular placement of the probe

What should the hybridization sites look like in fish?

Positive hybridization sites should appear dark brown. Fluorescence In Situ Hybridization (FISH) For FISH, the chromosomal DNA is denatured on the slides in 70 % formamide-2XSSC solution at 68–70 °C for 2 min. The slides are dehydrated and then air-dried.

What is the difference between IHC and FISH testing?

Most laboratories use IHC as a screening assay for all breast cancer cases and perform FISH testing on IHC 2+ cases. FISH has become universally accepted as a reference standard in the assessment of HER2 status and is often used to classify equivocal results by IHC.

What is the difference between fiber FISH and interphase FISH?

In an alternative technique to interphase or metaphase preparations, fiber FISH, interphase chromosomes are attached to a slide in such a way that they are stretched out in a straight line, rather than being tightly coiled, as in conventional FISH, or adopting a chromosome territory conformation, as in interphase FISH.

What is the fish test for breast cancer?

The FISH (fluorescence in situ hybridization) test checks the DNA of your cancer cells for extra copies of the HER2/neu gene. This gene makes proteins called HER2 (human epidermal growth factor receptor 2) that attach to the surface of all breast cells.

Is there an alternative FISH test for HER2 equivocal breast cancer?

Immunohistochemistry and alternative FISH testing in breast cancer with HER2 equivocal amplification The prevalence of double HER2 equivocal cases and the discrepancy between IHC and alternative FISH testing suggest that FISH alternative testing using both RAI1 and TP53 probes is necessary for conclusive classification.

What kind of fish is a X ray fish?

x-ray fish n. A small freshwater fish (Pristella maxillarus) native to South America and often kept in home aquariums, having an almost transparent body with a black stripe on the dorsal fin.