ArticleslgStudy

biology

Kihnichthys

Kihnichthys 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 Kihnichthys rather than just read about it. In short: Kihnichthys ufermanni, the Usumacinta cichlid, is a species of cichlid found in a few rivers in the Usumacinta River basin in Guatemala and southern Mexico. It typically occurs in rivers that are about 10–50 m (33–164 ft) wide, fairly deep, have few or no aquatic plants, and a variable water current.

Kihnichthys — main illustration
Kihnichthys — illustration

Key takeaways

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

Reference excerpt

Kihnichthys ufermanni, the Usumacinta cichlid, is a species of cichlid found in a few rivers in the Usumacinta River basin in Guatemala and southern Mexico. It typically occurs in rivers that are about 10–50 m (33–164 ft) wide, fairly deep, have few or no aquatic plants, and a variable water current. This species is the only known member of its genus, but several of its features, including the chisel-like teeth, are shared with Cincelichthys and whether they should be merged into a single genus is not yet fully resolved; a review in 2020 recommended that the Usumacinta cichlid should be moved into Cincelichthys. The Usumacinta cichlid reaches a standard length of 25 cm (10 in). The generic name honours the Guatemalan ichthyologist Herman A. Kihn while the specific name honours the German aquarist, and friend of Robert Allgayer's, Alfred Ufermann who died in 2000.

References

Worked examples

Example 1 — a first encounter with Kihnichthys

Start with the simplest possible case. Write down what Kihnichthys 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 Kihnichthys 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 Kihnichthys 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 Kihnichthys

In research
Kihnichthys 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 Kihnichthys 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
Kihnichthys is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cichlasomatinae stubs, Controversial fish taxa, Fish described in 2002, so understanding it makes those chapters shorter.
In everyday life
Look for Kihnichthys 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.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Kihnichthys” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Kihnichthys in 20 minutes

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

Frequently asked questions

What is Kihnichthys in simple terms?

Kihnichthys ufermanni, the Usumacinta cichlid, is a species of cichlid found in a few rivers in the Usumacinta River basin in Guatemala and southern Mexico. It typically occurs in rivers that are about 10–50 m (33–164 ft) wide, fairly deep, have few or no aquatic plants, and a variable water curren…

Why does Kihnichthys 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 Kihnichthys?

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 Kihnichthys.

Tags

  • Cichlasomatinae stubs
  • Controversial fish taxa
  • Fish described in 2002
  • Heroini
  • IUCN Red List data deficient species
  • Monotypic Perciformes genera

Keep exploring