FISCHWIKIAn independent field guideFresh & salt water
Est. 2026
Fischwiki /About the archive

Made for
the curious.

A small, independent fish wiki.
No grand expedition required.

Historic copper engraving of a tench
Cyprinus tinca / Bloch, pl. XIV
The idea

A cabinet of
aquatic curiosities.

Fischwiki is a personal, non-commercial project about fish. There are familiar river species here, open-ocean travellers and a few animals that look like someone got carried away.

The illustrations come mostly from the eighteenth-century work of Marcus Elieser Bloch. The species notes use modern names and describe how these animals live, reproduce and fare in the wild.

How to read the records

A note on the numbers.

Lengths and weights are reported maxima unless otherwise stated. Most fish you encounter will be smaller. Ages may be estimates or captive records; those are marked in the profiles. Standard length excludes the tail fin; total length includes it. A maximum is not a promise.

The conservation labels describe global IUCN assessments, which are published in different years. Atlantic cod’s widely cited Vulnerable assessment, for example, dates to 1996. Consult the linked record and local conservation guidance for a current decision.

Taxonomic placements can differ between authorities. Historical plate captions also use names that have since changed. These images are documents of natural history, rather than identification diagrams or scale drawings.

Further reading

The reference shelf.

FishBase ↗Species profiles, distribution, reported maximum sizes and life histories.IUCN Red List ↗Global extinction risk assessments. The publication year matters: an assessment may be much older than this website.Eschmeyer’s Catalog of Fishes ↗Scientific names and taxonomy, maintained by the California Academy of Sciences.Biodiversity Heritage Library ↗Digitised volumes of Bloch’s Ichthyologie and the source of most historical plates in this collection.IUCN: Atlantic salmon assessment, 2023 ↗The global reassessment of Atlantic salmon as Near Threatened.IUCN: Tuna reassessment, 2021 ↗Atlantic bluefin tuna’s change to Least Concern, with important differences between regional stocks.
Images & reuse

The original plates.

Locally hosted, with a source for every image.
Click a title to see its original record.

The Bloch and Andrew Smith illustrations below are in the public domain. The coelacanth photograph is by Alberto Fernandez Fernandez, licensed under CC BY-SA 3.0. Images have been resized and converted to WebP; the salmon plate has also been cropped. The adapted coelacanth files retain CC BY-SA 3.0.

Northern pike ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 32Public domain
European perch ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 52Public domain
Zander ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 51Public domain
Common carp ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 16Public domain
Tench ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 14Public domain
Wels catfish ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 34Public domain
Brown trout ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 22Public domain
Atlantic salmon ↗M. E. Bloch, Ichtyologie, ou Histoire naturelle des poissons, pl. XX (Biodiversity Heritage Library scan)Public domain
European eel ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 73Public domain
European sea sturgeon ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 88Public domain
Atlantic herring ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 29Public domain
Atlantic cod ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 64Public domain
European plaice ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 42Public domain
Anglerfish ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 87Public domain
Atlantic bluefin tuna ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 55Public domain
Ocean sunfish ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 128Public domain
Red lionfish ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 184Public domain
Great white shark ↗M. E. Bloch, Ichthyologie, ou Histoire naturelle des poissons, pl. 119Public domain
Whale shark ↗Andrew Smith, Illustrations of the Zoology of South Africa (via Wikimedia Commons)Public domain
West Indian Ocean coelacanth ↗Photo: Alberto Fernandez Fernandez, via Wikimedia CommonsCC BY-SA 3.0
Carp varieties (home page) ↗M. E. Bloch, Ichthyologie, pl. 17Public domain