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Research dossier · Science & Nature

Red top williamsi

species of fish

Specimen drawers, botanical folios and brass scientific instruments under study light
Science and natureInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJan 1, 2026
Entity authorityQ616011 ↗
Source-derived summary

The red top williamsi (Pseudotropheus williamsi) is a species of cichlid endemic to Lake Malawi where it occurs in areas with rocky substrates usually at depths of less than 2 metres (6.6 ft). This species can reach a length of 16.5 centimetres (6.5 in) TL. It can also be found in the aquarium trade. The specific name honours the Anglican missionary Joseph A . Williams who died by drowning in Lake Malawi in 1895, with Bishop Chauncy Maples, and who collected the type of the cichlid among others.

Editorial summary

“Red top williamsi” enters the record as species of fish. Crown Archives preserves that source wording while asking what williamsi, species and fish can confirm, complicate or overturn.

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current lead gives the account dated anchors—1895—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around williamsi, species and fish.
Editorial analysis

Why this record matters

“Red top williamsi” is worth following because a concise public description often conceals a longer documentary argument. Here, williamsi, species and fish provides the most credible route into that argument.

Evidence profile

Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jan 1, 2026. The linked authority identifier is Q616011. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1895.

Critical limits

Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.

Best used for
  • Current terminology
  • Classification context
  • Finding cited technical literature
Verify next

Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.

Three-step research path

  1. Establish the record: confirm the title “Red top williamsi”, its source revision and the description used here.
  2. Expand the search: follow Red top williamsi primary sources, Red top williamsi archive and williamsi 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

  1. Which source most directly establishes the central claim about “Red top williamsi”?
  2. Is the terminology current, historical or disputed?
  3. Has classification or technical consensus changed since the cited source?
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Source & attribution

This entry incorporates text from “Red top williamsi” 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.