biology

Sebastapistes

Sebastapistes 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 Sebastapistes rather than just read about it. In short: Sebastapistes is a genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. The fishes in this genus are found in the Indian and Pacific Ocean.

Key takeaways

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

Reference excerpt

Sebastapistes is a genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. The fishes in this genus are found in the Indian and Pacific Ocean.

Taxonomy Sebastapistes was first described as a genus in 1877 by the American ichthyologist Theodore Gill, Gill included 3 species within the new genus and in 1898 David Starr Jordan and Barton Warren Evermann designated Scorpaena strongia which had been described by Georges Cuvier in 1829 with its type locality given as Kosrae in the Caroline Islands, as the type species. This genus is classified within the tribe Scorpaenini, in the subfamily Scorpaeninae of the family Scorpaenidae. The etymology of the genus name Sebastapistes was not explained by Gill, it may be that Sebast- is derived from Sebastichthys (a subgenus of Sebastes), which was previously a genus S. cyanostigma was classified in, or a reference to sebastin fishes in general; apistes is apistus which means "untrustworthy" or "perfidious", as these fishes are not a true rockfishes but are "intermediate between the Sebastoid and Scorpaenoid genera".

Species The 11 recognized species in this genus are:

Sebastapistes ballieui (Sauvage, 1875) (Spotfin scorpionfish) Sebastapistes coniorta O. P. Jenkins, 1903 (Humpback nohu) Sebastapistes cyanostigma (Bleeker, 1856) (Yellowspotted scorpionfish) Sebastapistes fowleri (Pietschmann, 1934) (Pygmy scorpionfish) Sebastapistes galactacma O. P. Jenkins, 1903 (Galactacma scorpionfish) Sebastapistes mauritiana (Cuvier, 1829) (Spineblotch scorpionfish)

Sebastapistes nuchalis Günther, 1874 Sebastapistes perplexa Motomura, Aizawa & Endo, 2014 Sebastapistes strongia (G. Cuvier, 1829) (Barchin scorpionfish) Sebastapistes taeniophrys (Fowler, 1943) Sebastapistes tinkhami (Fowler, 1946) (Darkspotted scorpionfish)

Some authorities consider that S. nuchalis is a junior synonym of S. strongia and that Scorpaena pascuensis should be included within Sebastapistes.

Characteristics Sebastapistes scorpionfishes are characterised by there being 12 spines in the dorsal fin, having teeth on the palatine and byhaving the rear lacrimal spine being directed diagonally downwards. The pored scales in the lateral line continue on to the caudal peduncle and they do not have a deep occipital pit. There are species in the deepwater scorpionfish genus Neomerinthe which share these characteristics with this genus but have different patterns of spines and scales on their heads, differing meristics and by living in deep water. The size of these small scorpionfishes varies from a maximum published total length of 2.5 cm (0.98 in) in S. taeniophrys up to 11.7 cm (4.6 in) in S. ballieui.

Distribution and habitat Sebastapistes scorpionfishes are found in the Indian and Pacific Oceans from East Africa to Hawaii and Easter Island. They are mostly species of shallow, tropical coastal waters but two species S. strongia and S. perplexa extend to temperate waters off Japan.

References

Illustrations

Worked examples

Example 1 — a first encounter with Sebastapistes

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

In research: Sebastapistes 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 Sebastapistes 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: Sebastapistes is common in secondary-school and first-year university syllabi. It links to neighbouring topics Marine fish genera, Scorpaenini, Sebastapistes, so understanding it makes those chapters shorter.
In everyday life: Look for Sebastapistes 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.

Affiliate

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

How to study Sebastapistes in 20 minutes

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

Frequently asked questions

What is Sebastapistes in simple terms?

Sebastapistes is a genus of marine ray-finned fish belonging to the family Scorpaenidae, the scorpionfishes. The fishes in this genus are found in the Indian and Pacific Ocean.

Why does Sebastapistes 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 Sebastapistes?

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 Sebastapistes.