ArticleslgStudy

biology

List of data deficient fishes

List of data deficient 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 data deficient fishes rather than just read about it. In short: In September 2016, the International Union for Conservation of Nature (IUCN) listed 3191 data deficient fish species. A data deficient species is one which has been categorized by the IUCN as offering insufficient information for a proper assessment of conservation status to be made.

List of data deficient fishes — main illustration
List of data deficient fishes — illustration

Key takeaways

  • List of data deficient 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 data deficient fishes to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of List of data deficient fishes from memory before moving on to harder problems.

Reference excerpt

In September 2016, the International Union for Conservation of Nature (IUCN) listed 3191 data deficient fish species. A data deficient species is one which has been categorized by the IUCN as offering insufficient information for a proper assessment of conservation status to be made. Of all evaluated fish species, 21% are listed as data deficient. The IUCN also lists 12 fish subspecies as data deficient. Of the subpopulations of fishes evaluated by the IUCN, 34 species subpopulations have been assessed as data deficient. This is a complete list of data deficient fish species and subspecies evaluated by the IUCN. Species and subspecies which have data deficient subpopulations (or stocks) are indicated.

Cartilaginous fishes Chondrichthyes includes sharks, rays, skates, and sawfish. There are 475 species and three subpopulations of cartilaginous fish evaluated as data deficient.

Rays and skates There are 253 species and one subpopulation in the order Rajiformes evaluated as data deficient.

Narkids

Eagle rays

Guitarfish species

Whiptail stingrays

Narcinids Species

Subpopulations

Apron ray (Discopyge tschudii) (1 subpopulation)

Butterfly rays

Skates

Urotrygonids

Potamotrygonids

Urolophids

Torpedinids

Skates

Anacanthobatidae

Other Rajiformes species

Ground sharks There are 110 species and one subpopulation of ground shark evaluated as data deficient.

Requiem sharks Species

Subpopulations

Night shark (Carcharhinus signatus) (1 subpopulation)

Hemigaleids

Houndsharks

Catsharks

Proscylliids

Carpet sharks

Squaliformes There are 67 species and one subpopulation in the order Squaliformes evaluated as data deficient.

Oxynotids

Centrophorids Species

Subpopulations

Gulper shark (Centrophorus granulosus) (1 subpopulation)

Echinorhinids Bramble shark (Echinorhinus brucus)

Squalids

Somniosids

Dalatiids

Etmopterids

Chimaeras There are 20 Chimaera species evaluated as data deficient.

Chimaerids

Rhinochimaerids

Bullhead sharks

Other cartilaginous fish species

Lampreys

Ray-finned fishes There are 2682 species, 12 subspecies, and one subpopulation of ray-finned fish evaluated as data deficient.

Salmoniformes Species

Subspecies

Coregonus sardinella baunti Subpopulations

Sockeye salmon (Oncorhynchus nerka) (31 subpopulations)

Silversides

Toothcarps There are 75 species and two subspecies of toothcarp evaluated as data deficient.

Pupfish species

Aplocheilids

Rivulids

Nothobranchiids Species

Subspecies

Aphyosemion cameronense haasi Aphyosemion celiae winifredae

Poeciliids

Cypriniformes Cypriniformes includes carps, minnows, loaches and relatives. There are 610 species and two subspecies in the order Cypriniformes evaluated as data deficient.

Hillstream loaches

True loaches

Cyprinids Species

Subspecies

Osteobrama cotio peninsularis Rhodeus atremius suigensis

Psilorhynchids

Suckers

Bonefishes

Gasterosteiformes Includes sticklebacks and relatives.

Osmeriformes Includes freshwater smelts and allies.

Catfishes There are 439 catfish species evaluated as data deficient.

Amblycipitids

Heptapterids

Astroblepids

Sisorids

Silurids

Trichomycterids

Loach catfishes

Claroteids

Airbreathing catfishes

Loricariids

Mochokids

Stream catfishes

Ariids

Bagrids

Schilbeids

Callichthyids

Erethistids

Other catfish species

Gonorynchiformes Includes milkfish, beaked salmon and allies.

Batrachoidiformes

Elopiformes

Perciformes There are 786 species and two subspecies in the order Perciformes evaluated as data deficient.

Temperate perches

Gouramis

Cichlids Species

Subspecies

Cichlasoma urophthalmum ericymba Pseudocrenilabrus multicolor multicolor

Terapontids

Odontobutidae

Epinephelids

Eleotrids

Gobies

Badids

Sparids

Scombrids

Dragonets

Lutjanids

Sand stargazers

Anabantidae

Sciaenids

Labrisomids

Serranids

Chaenopsids

Combtooth blennies

Microdesmids

Wrasses

Threefin blennies

Haemulids

Apogonids

Ambassids

Acanthurids

Butterflyfishes

Other Perciformes species

Beloniformes

Synbranchiformes

Gymnotiformes

Osteoglossiformes There are 40 species in the order Osteoglossiformes evaluated as data deficient.

Mormyrids

Arapaimids Arapaima (Arapaima gigas)

Gobiesociformes

Characiformes There are 110 species in the order Characiformes evaluated as data deficient.

Alestids

Distichodontids

Characids

Crenuchids

Other Characiformes species

Syngnathiformes Syngnathiformes includes the pipefishes and seahorses. There are 71 species and two subspecies in the order Syngnathiformes evaluated as data deficient.

Syngnathids Species

Subspecies

Subtropical-tropical trunk-pouch pipefish (Microphis brachyurus aculeatus) Opossum river pipefish (Microphis brachyurus lineatus)

Centriscids

Clupeiformes

Scorpaeniformes There are 57 species and one subspecies in the order Scorpaeniformes evaluated as data deficient.

Cottids

Scorpaenids

Liparidae

Other Scorpaeniformes Species

Subspecies

Spiny scorpionfish (Trachyscorpia cristulata echinata)

Ophidiiformes

Tetraodontiformes There are 36 species in the order Tetraodontiformes evaluated as data deficient.

Tetraodontids

Filefish species

Ostraciids Island cowfish (Acanthostracion notacanthus)

Porcupinefish species Deepwater burrfish (Allomycterus pilatus)

Triggerfishes Deepwater triggerfish (Rhinecanthus abyssus)

Gadiformes There are 32 species in the order Gadiformes evaluated as data deficient.

Merlucciids Merluccius gayi Cortez hake (Merluccius hernandezi)

Grenadiers species

Morids

Lotids Azores rockling (Gaidropsarus granti) Gaidropsarus guttatus

Mullets

Bichirs Polypterus teugelsi

Eels There are 50 eel species evaluated as data deficient.

Ophichthids

Congrids

Other eel species

Flatfishes There are 58 species and two subspecies of flatfish evaluated as data deficient.

Soleids

Tonguefishes

Paralichthyids Species

Subspecies

Etropus delsmani delsmani Etropus delsmani pacificus

Bothids

Other flatfish species

Anglerfishes

Beryciformes

Stephanoberyciformes

Aulopiformes

Zeiformes Smooth oreo (Pseudocyttus maculatus) John Dory (Zeus faber)

Stomiiformes

Cetomimiformes

Myctophiformes

Saccopharyngiformes

Hagfishes

See also Lists of IUCN Red List data deficient species List of least concern fishes List of near threatened fishes List of vulnerable fishes List of endangered fishes List of critically endangered fishes List of recently extinct fishes Sustainable seafood advisory lists and certification

Notes

References

Worked examples

Example 1 — a first encounter with List of data deficient fishes

Start with the simplest possible case. Write down what List of data deficient 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 data deficient 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 data deficient 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 data deficient fishes

In research
List of data deficient 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 data deficient 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 data deficient fishes is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fish by conservation status, IUCN Red List data deficient species, Lists of animals by conservation status, so understanding it makes those chapters shorter.
In everyday life
Look for List of data deficient 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.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “List of data deficient fishes” →

Affiliate

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

How to study List of data deficient fishes in 20 minutes

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

Frequently asked questions

What is List of data deficient fishes in simple terms?

In September 2016, the International Union for Conservation of Nature (IUCN) listed 3191 data deficient fish species. A data deficient species is one which has been categorized by the IUCN as offering insufficient information for a proper assessment of conservation status to be made.

Why does List of data deficient 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 data deficient 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 data deficient fishes.

Tags

  • Fish by conservation status
  • IUCN Red List data deficient species
  • Lists of animals by conservation status
  • Lists of fishes

Keep exploring