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Australian blackspot shark

species of fish

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 5, 2026
Entity authorityQ1035604 ↗
Source-derived summary

The Australian blackspot shark or Coates's shark (Carcharhinus coatesi) is a species of requiem shark found off northern Australia (from Shark Bay in Western Australia to K'gari in Queensland) and possibly also off the coast of New Guinea. It belongs to a species complex of blackspot sharks in the family Carcharhinidae. These sharks are not widely studied due to their cryptic nature, but there was a recent reclassification distinguishing it from the whitecheek shark (Carcharhinus dussumieri) and the blackspot shark (Carcharhinus sealei) in 2012. Much of the existing literature predates this reclassification and groups the Australian blackspot shark with the aforementioned closely related species.

Description

The Australian blackspot shark is a small inshore shark. At birth, they range from 38–40 cm (15–16 in) in length. The mature size for both sexes is approximately 70 cm or 28 in. The maximum size recorded is 88 cm or 35 in. They have two dorsal fins, triangular pectoral fins, paired pelvic fins, an anal fin, and a heterocercal caudal fin. The second dorsal has a dark to black tip and all other fins are plain.

Editorial summary

Begin with the source’s own compact description: “Australian blackspot shark” is species of fish. The dossier treats that line as a proposition to test through Australian, blackspot and shark, not as a finished interpretation.

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current lead gives the account dated anchors—2012—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Australian, blackspot and shark is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “species of fish” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Aug 5, 2026. The linked authority identifier is Q1035604. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2012.

Critical limits

A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Three-step research path

  1. Establish the record: confirm the title “Australian blackspot shark”, its source revision and the description used here.
  2. Expand the search: follow Australian blackspot shark primary sources, Australian blackspot shark archive and Australian research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from “Australian blackspot shark” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.