biology

Parachromis friedrichsthalii

Parachromis friedrichsthalii 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 Parachromis friedrichsthalii rather than just read about it. In short: Parachromis friedrichsthalii, the yellowjacket cichlid, is a species of cichlid native to Central America, where it is found along the Atlantic Slope from western Honduras to northern Guatemala. This species grows to a length of 28 centimetres (11 in) SL.

Key takeaways

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

Reference excerpt

Parachromis friedrichsthalii, the yellowjacket cichlid, is a species of cichlid native to Central America, where it is found along the Atlantic Slope from western Honduras to northern Guatemala. This species grows to a length of 28 centimetres (11 in) SL. This species is popular with anglers as a gamefish and can also be found in the aquarium trade. The specific name honours the Austrian explorer, botanist and archaeologist Emanuel von Friedrichsthal (1809-1842), who sent many specimens to Vienna from Central America, including the type of this fish. P. friedrichsthalii has an unusual hunting mechanism. The species has been observed to lie immobile near the bottom, feigning death. When smaller fish approach and attempt to pick at the dead fish, P. friedrichsthalii ambush the smaller fish. Similar behaviour has also been observed in some species of Lake Malawi cichlids, particularly from the genus Nimbochromis.

Description Physically similar to other members of the genus, especially P. managuensis and P. motaguensis, P. freidrichsthalii holds the broken band which runs horizontally. The most distinct characteristic which enables the correct identification of this fish, is the golden-yellow colouration which is more prominent in this fish than the others. However, P. loiselli also possesses such gold and yellow colouration. A distinct characteristic which enables these two fish to be easily separated is the distinctly un-broken dark band seen on P. friedrichsthalii. The dark spots which is found on P. loiselli ıs often so closely grouped that it appears to be a single solid band. P. loiselli can also be identified by its main colouration. Unlike all other members ın the genus, P. loiselli's main color is a solid yellow colouration.

References

External links Photograph

Illustrations

Worked examples

Example 1 — a first encounter with Parachromis friedrichsthalii

Start with the simplest possible case. Write down what Parachromis friedrichsthalii 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 Parachromis friedrichsthalii 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 Parachromis friedrichsthalii 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 Parachromis friedrichsthalii

In research: Parachromis friedrichsthalii 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 Parachromis friedrichsthalii 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: Parachromis friedrichsthalii is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cichlid fish of Central America, Controversial fish taxa, Fish described in 1840, so understanding it makes those chapters shorter.
In everyday life: Look for Parachromis friedrichsthalii 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 Parachromis friedrichsthalii in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Parachromis friedrichsthalii 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 Parachromis friedrichsthalii out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Parachromis friedrichsthalii in simple terms?

Why does Parachromis friedrichsthalii 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 Parachromis friedrichsthalii?

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 Parachromis friedrichsthalii.