biology

List of least concern fishes

List of least concern fishes 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 List of least concern fishes rather than just read about it. In short: As of September 2016, the International Union for Conservation of Nature (IUCN) lists 9131 least concern fish species. 60% of all evaluated fish species are listed as least concern. The IUCN also lists 37 fish subspecies as least concern.

Key takeaways

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

Reference excerpt

As of September 2016, the International Union for Conservation of Nature (IUCN) lists 9131 least concern fish species. 60% of all evaluated fish species are listed as least concern. The IUCN also lists 37 fish subspecies as least concern. Of the subpopulations of fishes evaluated by the IUCN, 44 species subpopulations have been assessed as least concern. This is a complete list of least concern fish species and subspecies evaluated by the IUCN. Species and subspecies which have least concern subpopulations (or stocks) are indicated.

Lobe-finned fishes South American lungfish (Lepidosiren paradoxa) Marbled lungfish (Protopterus aethiopicus) Gilled African lungfish (Protopterus amphibius) West African lungfish (Protopterus annectens) Spotted African lungfish (Protopterus dolloi)

Cartilaginous fishes Chondrichthyes includes sharks, rays, skates, and sawfish. There are 313 species and two subpopulations of cartilaginous fish assessed as least concern.

Rays and skates There are 148 species in the order Rajiformes assessed as least concern.

Guitarfish species Eastern shovelnose ray (Aptychotrema rostrata) Southern shovelnose ray (Aptychotrema vincentiana) Bluntnose guitarfish (Rhinobatos blochii) Goldeneye shovelnose ray (Rhinobatos sainsburyi) Southern fiddler ray (Trygonorrhina dumerilii) Eastern fiddler ray (Trygonorrhina fasciata)

Whiptail stingrays Short-tail stingray (Bathytoshia brevicaudata) Broad stingray (Bathytoshia lata) Atlantic stingray (Hypanus sabinus) Black-spotted whipray (Maculabatis astra) Arabian banded whipray (Maculabatis randalli) Freshwater whipray (Urogymnus dalyensis) Brown whipray (Maculabatis toshi) Painted maskray (Neotrygon leylandi) Peppered maskray (Neotrygon picta) Pelagic stingray (Pteroplatytrygon violacea)

Narcinids Blind torpedo (Benthobatis marcida) Dark blind ray (Benthobatis moresbyi) Ocellated electric ray (Diplobatis ommata) Apron ray (Discopyge tschudii) Lesser electric ray (Narcine bancroftii) Brown numbfish (Narcine brunnea) Western numbfish (Narcinops lasti) Eastern numbfish (Narcinops nelsoni) Ornate numbfish (Narcinops ornata) Tasmanian numbfish (Narcinops tasmaniensis) Banded numbfish (Narcinops westraliensis)

Hardnose skates Broad skate (Amblyraja badia) Southern thorny skate (Amblyraja doellojuradoi) Arctic skate (Amblyraja hyperborea) Jensen's skate (Amblyraja jenseni) Bigmouth skate (Amblyraja robertsi) Deepsea skate (Bathyraja abyssicola) Aguja skate (Bathyraja aguja) Peruvian skate (Bathyraja peruana) Big skate (Beringraja binoculata) Blackbelly shortskate (Breviraja nigriventralis) Spiny shortskate (Breviraja spinosa) Skilletskate (Dactylobatus armatus) Hookskate (Dactylobatus clarkii) Lempriere's skate (Dentiraja lemprieri) Brown bight skate (Dipturus acrobelus) Pale tropical skate (Dipturus apricus) Graham's skate (Dipturus grahami) Heald's skate (Dentiraja healdi) New Zealand smooth skate (Dipturus innominatus) Ocellate skate (Dentiraja oculus) Argus skate (Dipturus polyommata) Slimeskate (Dipturus pullopunctatus) Caribbean skate (Dipturus teevani) Weng's skate (Dipturus wengi) Atlantic finless skate (Gurgesiella atlantica) Dusky finless skate (Gurgesiella furvescens) Rosette skate (Leucoraja garmani) Cuckoo skate (Leucoraja naevus) Sawback skate (Leucoraja pristispina) Yellospotted skate (Leucoraja wallacei) Krefft's skate (Malacoraja kreffti) Soft skate (Malacoraja spinacidermis) Blue pygmy skate (Neoraja caerulea) Iberian pygmy skate (Neoraja iberica) African dwarf skate (Neoraja stehmanni) Arafura skate (Okamejei arafurensis) Thintail skate (Okamejei leptoura) Clearnose skate (Raja eglanteria) California skate (Raja inornata) Brown skate (Raja miraletus) Spotted skate (Raja montagui) Speckled ray (Raja polystigma) Longnose skate (Beringraja rhina) Pacific starry skate (Raja stellulata) Bigthorn skate (Rajella barnardi) Deepwater ray (Rajella bathyphila) Bigelow's ray (Rajella bigelowi) Challenger skate (Rajella challengeri) Ghost skate (Rajella dissimilis) Sooty skate (Rajella fuliginea) Round ray (Rajella fyllae) Mid-atlantic skate (Rajella kukujevi) Leopard skate (Rajella leopardus) Sailray (Rajella lintea) Blackish skate (Rajella nigerrima) Purplebelly skate (Rajella purpuriventralis) Smoothback skate (Rajella ravidula) Ocellate skate (Rostroraja ackleyi) Bahama skate (Rostroraja bahamensis) Clearnose skate (Rostroraja eglanteria) Roundel skate (Rostroraja texana) New Zealand rough skate (Zearaja nasutus)

Urolophids Yellow shovelnose stingaree (Trygonoptera galba) Western shovelnose stingaree (Trygonoptera mucosa) Striped stingaree (Trygonoptera ovalis) Masked stingaree (Trygonoptera personata) Common stingaree (Trygonoptera testacea) Circular stingaree (Urolophus circularis) Crossback stingaree (Urolophus cruciatus) Chesterfield Island stingaree (Urolophus deforgesi) Wide stingaree (Urolophus expansus) Patchwork stingaree (Urolophus flavomosaicus) Spotted stingaree (Urolophus gigas) Lobed stingaree (Urolophus lobatus) Mitotic stingaree (Urolophus mitosis) New Caledonian stingaree (Urolophus neocaledoniensis) Butterfly stingaree (Urolophus papilio) Sparsely-spotted stingaree (Urolophus paucimaculatus) Coral Sea stingaree (Urolophus piperatus) Brown stingaree (Urolophus westraliensis)

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with List of least concern fishes

Start with the simplest possible case. Write down what List of least concern fishes 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 List of least concern fishes 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 List of least concern fishes 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 List of least concern fishes

In research: List of least concern fishes 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 List of least concern fishes 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: List of least concern fishes is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fish by conservation status, IUCN Red List least concern species, Lists of animals by conservation status, so understanding it makes those chapters shorter.
In everyday life: Look for List of least concern fishes 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 List of least concern fishes in 20 minutes

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

Frequently asked questions

What is List of least concern fishes in simple terms?

Why does List of least concern fishes 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 List of least concern fishes?

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 List of least concern fishes.