Galaxias and Micrornatus

Galaxias attenuatus (= Galaxias maculatus Cuvier 1816, 4–58cm depending on species, typically 10cm) is the Inanga, or common galaxias, an extant freshwater fish. It spends the first six months at sea. Galaxias is basal to several odd small fish. See below.

Micrornatus hopwoodi (Casier 1966, formerly Eocoelopoma hopwoodi, Beckett and Friedman 2015, early Eocene, BMNH 36136 = NHMUK PV OR 36136) was considered a mackerel close to Scomber, but here nests with much smaller Galaxias. The premaxilla and teeth of this marine taxon are much larger.

Beckett HT and Friedman M 2015. The one that got away from Smith Woodward: cranial anatomy of Micrornatus (Acanthomorpha: Scombridae) revealed using computed microtomography. In: Johanson Z Barrett PM, Richter M and Smith M (eds) Arthur Smith Woodward: His Life and Influence on Modern Vertebrate Palaeontology. Geological Society, London, Special Publications, 430, http://doi.org/10.1144/SP430.16

Casier E 1966. Faune Ichthyologique du London Clay. British Museum (Natural History), London.

Conith AJ and Albertson RC 2021. The cichlid oral and pharyngeal jaws are evolutionarily and genetically coupled. Nature Communications https://doi.org/10.1038/s41467-021-25755-5

Cuvier G 1816. Le règne animal distribué d’après son organisation, pour servir de base à l’histoire naturelle des animaux et d’introduction à l’anatomie comparée. Les reptiles, les poissons, les mollusques et les annélides. Déterville, Paris. Vol. 2, Edition 1: i-xviii, 1-532, (pls. 9-10, in v. 4).

Linnaeus C 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.

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wiki/Galaxias

Cypriniformes

Danio

Albula

Synodus