biology

Scorpaenodes evides

Scorpaenodes evides 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 Scorpaenodes evides rather than just read about it. In short: Scorpaenodes evides, the cheekspot scorpionfish, little scorpionfish or shore scorpionfish, is a species of venomous marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. This species is found in the Indian and Pacific Oceans.

Key takeaways

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

Reference excerpt

Scorpaenodes evides, the cheekspot scorpionfish, little scorpionfish or shore scorpionfish, is a species of venomous marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. This species is found in the Indian and Pacific Oceans.

Taxonomy Scorpaenodes evides was first formally described in 1914 as Thysanichthys evides by the American ichthyologists David Starr Jordan and William Francis Thompson with the type locality given as Misaki in Japan. However, this taxon was not reported subsequently and a re-examination of the holotype in 2010 showed that this was the same species as the widely distributed Sebastella littoralis which had been described in 1917 by the Japanese ichthyologist Shigeho Tanaka, also from Misaki, and that this taxon should be placed in the genus Scorpaenodes, with S. littoralis being a junior synonym of S. evides. This study also recognised no less than seven separate geographic populations, some of which may be subspecies and that the nominate subspecies S. e. evides may only occur Japan and Taiwan. The specific name evides means "pretty", the authors did not explain their choice of name.

Description Scorpaenodes evides has 13 spines and 9 soft rays in its dorsal fin with 3 spines and 5 soft rays in its anal fin. The front of the body is not strobly compressed but compression increases towards the caudal fin. The body is moderately deep, its depth being smaller than the length of the head. There is a tentacle on the front nostril. This species colour is brownish to pink or reddish with a dark blotch on the ventral part of the operculumthe fins have red spots and there are leaf-like skin flaps on the head. This species grows to 11 cm (4.3 in) in total length.

Distribution and habitat Scoraenodes evides has a wide Indo-Pacific distribution.In Africa it is found on the eastern coast of South Africa and in the Red Sea, through the Indian and Pacific Oceans as far east as Easter Island and Hawaii. It occurs as far north as southern Japan, and as far south as Australia where it is found from the Houtman Abrolhos of Western Australia along the northern coasts of Australia as far as Jervis Bay in New South Wales, as well as at Lord Howe Island and Elizabeth and Middleton reefs. This species is a demersal fish found mainly in shallow tropical marine waters at depths of 1 to 40 m (3 ft 3 in to 131 ft 3 in), on rocky and coral reefs. It is frequently seen upside down on the roofs of caves.

Biology The spines in the dorsal fin are venomous.

References

Illustrations

Worked examples

Example 1 — a first encounter with Scorpaenodes evides

Start with the simplest possible case. Write down what Scorpaenodes evides 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 Scorpaenodes evides 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 Scorpaenodes evides 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 Scorpaenodes evides

In research: Scorpaenodes evides 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 Scorpaenodes evides 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: Scorpaenodes evides is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fish described in 1914, IUCN Red List least concern species, Scorpaenodes, so understanding it makes those chapters shorter.
In everyday life: Look for Scorpaenodes evides 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 Scorpaenodes evides in 20 minutes

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

Frequently asked questions

What is Scorpaenodes evides in simple terms?

Why does Scorpaenodes evides 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 Scorpaenodes evides?

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 Scorpaenodes evides.