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Blackcap basslet

species of fish

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 28, 2025
Entity authorityQ598787 ↗
Source-derived summary

The blackcap basslet (Gramma melacara), or blackcap gramma, is a species of fish inhabiting reefs in the tropical western Atlantic Ocean. It prefers vertical surfaces with crevices in which it can hide. It can be found at depths from 10 to 180 metres (33 to 591 ft) (usually between 20 and 60 metres (66 and 197 ft)). This species can also be found in the aquarium trade.

Appearance

A small fish, reaching a length of 10 centimetres (3.9 in) TL, it is purple with a diagonal black cap on its head. The body colour varies from magenta to purple, and there is a jet-black diagonal cap running from the lip to the fore dorsal fin. The largest scientifically measured blackcap gramma was 10.0 cm / 3.9 inches.

In the aquarium

A hardy fish, it is typically peaceful and can be kept in a reef aquarium. Care should be taken, however, to only add one fish to an aquarium, as they are territorial and do not accept other members of the same, or similar looking species in the same aquarium. Small shrimp also may get eaten by this fish.

Editorial summary

The public source identifies “Blackcap basslet” as species of fish. This brief keeps that definition visible, then builds a research path around Blackcap, basslet and species.

Editorial reviewA sound reference starting point where classification, measurement and the date of the underlying evidence remain visible. The current 188-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with Blackcap, basslet and species providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Blackcap basslet”, the useful work is to connect “species of fish” to the records capable of establishing context and consequence.

Evidence profile

Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Sep 28, 2025. The linked authority identifier is Q598787. None of the 0 selected statements returned an explicit reference.

Critical limits

Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. 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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Source & attribution

This entry incorporates text from “Blackcap basslet” 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.