biology

Schistura jarutanini

Schistura jarutanini is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Schistura jarutanini rather than just read about it. In short: Schistura jarutanini is a species of stone loach that is endemic to Thailand. The specific name is in honor of Kittipong Jarutanin, a Thai ichthyologist and aquarist who collected the type specimen.

Key takeaways

Schistura jarutanini belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Schistura jarutanini to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Schistura jarutanini from memory before moving on to harder problems.

Reference excerpt

Schistura jarutanini is a species of stone loach that is endemic to Thailand. The specific name is in honor of Kittipong Jarutanin, a Thai ichthyologist and aquarist who collected the type specimen.

Distribution This species is endemic to Thailand, specifically to the rivers of Khwae Yai and Khwae Noi which are the major tributaries of the Mae Klong and Kasat rivers which flows south to the Gulf of Thailand and westward to the Adaman Sea respectively. They can be found in creeks and rivers that are small to midsize in range. They are often found in rivers that flow over gravel and cobble. When this species was originally described, it was thought to be a troglodytic species inhabiting caves. This is because when the specimens used to describe the species were collected, they were collected from an underground stream that was thought to Khwae Yai drainage system in the Mae Klong River basin, western Thailand. It is now known that this species rarely inhabits caves and is instead epigean.

Description This species grow to an average length of 38.5 mm but their sizes can range from 22.6–62.0 mm. The eye diameter is around 0.45 mm. They have 8 and a half branched dorsal-fin rays and 17 branched caudal-fin rays with 9 upper and 8 lower. They have 5 and a half branched anal-fin rays. This species lacks red on the fins and a wide light-colored bar just before the base of the caudal fin. The black bar is mostly restricted to the lower half of the caudal-fin base and a black spot on the unbranched rays in the dorsal margin of the caudal fin.

Taxonomy Schistura jarutanini is a stone loach meaning that it belongs to the family Nemacheilidae. The most closely related species to Schistura jarutanini is Schistura mahnerti.

References

Sources Froese, Rainer; Pauly, Daniel (eds.). "Schistura jarutanini". FishBase. December 2012 version.

Worked examples

Example 1 — a first encounter with Schistura jarutanini

Start with the simplest possible case. Write down what Schistura jarutanini claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Schistura jarutanini before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Schistura jarutanini ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Schistura jarutanini

In research: Schistura jarutanini appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Schistura jarutanini in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Schistura jarutanini is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cave fish, Fish described in 1990, Fish of Southeast Asia, so understanding it makes those chapters shorter.
In everyday life: Look for Schistura jarutanini outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Schistura jarutanini in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Schistura jarutanini means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Schistura jarutanini out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Schistura jarutanini in simple terms?

Schistura jarutanini is a species of stone loach that is endemic to Thailand. The specific name is in honor of Kittipong Jarutanin, a Thai ichthyologist and aquarist who collected the type specimen.

Why does Schistura jarutanini matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Schistura jarutanini?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Schistura jarutanini.